Duquesne Spy Ring
Encyclopedia
The Duquesne Spy Ring is the largest espionage
Espionage
Espionage or spying involves an individual obtaining information that is considered secret or confidential without the permission of the holder of the information. Espionage is inherently clandestine, lest the legitimate holder of the information change plans or take other countermeasures once it...

 case in United States history that ended in convictions. A total of thirty-three members of a German
Germany
Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

 espionage network headed by Frederick "Fritz" Joubert Duquesne were convicted after a lengthy espionage investigation by the Federal Bureau of Investigation
Federal Bureau of Investigation
The Federal Bureau of Investigation is an agency of the United States Department of Justice that serves as both a federal criminal investigative body and an internal intelligence agency . The FBI has investigative jurisdiction over violations of more than 200 categories of federal crime...

 (FBI). Of those arrested on the charge of espionage, 19 pleaded guilty. The remaining 14 men who entered pleas of not guilty were brought to jury trial in Federal District Court, Brooklyn
Brooklyn
Brooklyn is the most populous of New York City's five boroughs, with nearly 2.6 million residents, and the second-largest in area. Since 1896, Brooklyn has had the same boundaries as Kings County, which is now the most populous county in New York State and the second-most densely populated...

, New York
New York
New York is a state in the Northeastern region of the United States. It is the nation's third most populous state. New York is bordered by New Jersey and Pennsylvania to the south, and by Connecticut, Massachusetts and Vermont to the east...

, on September 3, 1941; and all found guilty on December 13, 1941. On January 2, 1942, the group was sentenced to serve a total of over 300 years in prison.

The German spies that formed the Duquesne spy ring were placed in key jobs in the United States to get information
Information
Information in its most restricted technical sense is a message or collection of messages that consists of an ordered sequence of symbols, or it is the meaning that can be interpreted from such a message or collection of messages. Information can be recorded or transmitted. It can be recorded as...

 that could be used in the event of war and to carry out acts of sabotage
Sabotage
Sabotage is a deliberate action aimed at weakening another entity through subversion, obstruction, disruption, or destruction. In a workplace setting, sabotage is the conscious withdrawal of efficiency generally directed at causing some change in workplace conditions. One who engages in sabotage is...

: one person opened a restaurant and used his position to get information from his customers; another person worked on an airline so that he could report Allied
Allies of World War II
The Allies of World War II were the countries that opposed the Axis powers during the Second World War . Former Axis states contributing to the Allied victory are not considered Allied states...

 ships that were crossing the Atlantic Ocean
Atlantic Ocean
The Atlantic Ocean is the second-largest of the world's oceanic divisions. With a total area of about , it covers approximately 20% of the Earth's surface and about 26% of its water surface area...

; others in the ring worked as delivery people so that they could deliver secret messages alongside normal messages.

William G. Sebold
William G. Sebold
William G. Sebold , born Wilhelm Georg Debrowski in Mülheim, Germany, was a German spy in the United States during World War II, who became a double agent for the FBI.-Early life:...

, who had been recruited as a spy for Germany, was a major factor in the FBI's successful resolution of this case through his work as a double agent
Double agent
A double agent, commonly abbreviated referral of double secret agent, is a counterintelligence term used to designate an employee of a secret service or organization, whose primary aim is to spy on the target organization, but who in fact is a member of that same target organization oneself. They...

 for the United States government. For nearly two years the FBI ran a radio station in New York for the ring, learning what Germany was sending to its spies in the United States while controlling the information that was being transmitted to Germany. Sebold's success as a counterespionage agent was demonstrated by the successful prosecution of the German agents.

One German spymaster later commented that the ring's roundup delivered "the death blow" to their espionage efforts in the United States. FBI director J. Edgar Hoover
J. Edgar Hoover
John Edgar Hoover was the first Director of the Federal Bureau of Investigation of the United States. Appointed director of the Bureau of Investigation—predecessor to the FBI—in 1924, he was instrumental in founding the FBI in 1935, where he remained director until his death in 1972...

 called his concerted FBI swoop on Duquesne's ring the greatest spy roundup in U.S. history.

The 1945 film "The House on 92nd Street
The House on 92nd Street
The House on 92nd Street is a 1945 black-and-white spy film directed by Henry Hathaway. The film, shot mainly in New York City, was released shortly after the end of World War II. The House on 92nd Street was made with the full cooperation of the Federal Bureau of Investigation , and its head, J....

" was also a thinly disguised version of the Duquesne Spy Ring saga of 1941, but differs from historical fact. It won screenwriter Charles G. Booth
Charles G. Booth
Charles G. Booth was a British-born writer who settled in America and wrote several classic Hollywood stories, including The General Died at Dawn and Sundown...

 an Academy Award for the best original motion picture story.

Peter Duffy, author of The Bielski Brothers and The Killing of Major Denis Mahon: A Mystery of Old Ireland, is writing a non-fiction book about the spy ring for Scribner, a division of Simon and Schuster.

William Sebold (double-agent)

A native of Germany, William Sebold
William G. Sebold
William G. Sebold , born Wilhelm Georg Debrowski in Mülheim, Germany, was a German spy in the United States during World War II, who became a double agent for the FBI.-Early life:...

 served in the Imperial German Army during World War I
World War I
World War I , which was predominantly called the World War or the Great War from its occurrence until 1939, and the First World War or World War I thereafter, was a major war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918...

. After leaving Germany in 1921, he worked in industrial and aircraft plants throughout the United States and South America. On February 10, 1936, he became a naturalized citizen of the United States.

Sebold returned to Germany in February 1939 to visit his mother in Mülheim
Mülheim
Mülheim an der Ruhr, also called "City on the River", is a city in North Rhine-Westphalia in Germany. It is located in the Ruhr Area between Duisburg, Essen, Oberhausen and Ratingen...

. On arrival in Hamburg, Germany, he was approached by a member of the Gestapo
Gestapo
The Gestapo was the official secret police of Nazi Germany. Beginning on 20 April 1934, it was under the administration of the SS leader Heinrich Himmler in his position as Chief of German Police...

 who said that Sebold would be contacted in the near future. Sebold proceeded to Mülheim where he obtained employment.

In September 1939, a Dr. Gassner visited Sebold in Mülheim and interrogated him about military planes and equipment in the United States. He also asked Sebold to return to the United States as an agent
Espionage
Espionage or spying involves an individual obtaining information that is considered secret or confidential without the permission of the holder of the information. Espionage is inherently clandestine, lest the legitimate holder of the information change plans or take other countermeasures once it...

 for Germany. Subsequent visits by Dr. Gassner and a Dr. Renken, later identified as Major Nickolaus Ritter of the German Secret Service, persuaded Sebold to cooperate with the Reich because he feared reprisals against family members still living there. Ritter was the Abwehr
Abwehr
The Abwehr was a German military intelligence organisation from 1921 to 1944. The term Abwehr was used as a concession to Allied demands that Germany's post-World War I intelligence activities be for "defensive" purposes only...

 officer in charge of espionage against the United States and Britain.

Since Sebold's passport had been stolen shortly after his first visit from Gassner, Sebold went to the US consulate in Cologne, Germany, to obtain a new one. While there, Sebold secretly told consulate personnel about his future role as a German agent and expressed his wish to cooperate with the FBI when he got back to America.

Sebold reported to Hamburg, Germany, where he was instructed in such areas as preparing coded messages and microphotographs. On completion of training, he was given five microphotographs containing instructions for preparing a code and detailing the type of information he was to transmit to Germany from the United States. Sebold was told to retain two of the microphotographs and to deliver the other three to German operatives in the United States: Fritz Joubert Duquesne, Hermann Lang, and one other. After receiving final instructions, including using the assumed name Harry Sawyer, he sailed from Genoa, Italy, and arrived in New York City
New York City
New York is the most populous city in the United States and the center of the New York Metropolitan Area, one of the most populous metropolitan areas in the world. New York exerts a significant impact upon global commerce, finance, media, art, fashion, research, technology, education, and...

 on February 8, 1940.

The FBI had been advised of Sebold's expected arrival, his mission, and his intent to assist in identifying German agents in the United States. Under the guidance of special agents, Sebold established residence in New York City as Harry Sawyer. Also, an office was set up for him as a consulting diesel engineer, to be used as a cover in establishing contact with members of the spy ring. In selecting the office for Sebold, FBI agents ensured that they could observe any meetings taking place there.

In May 1940, a shortwave radio-transmitting station operated by FBI agents on Long Island
Long Island
Long Island is an island located in the southeast part of the U.S. state of New York, just east of Manhattan. Stretching northeast into the Atlantic Ocean, Long Island contains four counties, two of which are boroughs of New York City , and two of which are mainly suburban...

 established contact with the German shortwave station abroad. For 16 months it served as a main channel of communications between German spies in New York City and their superiors in Germany. During this time, the FBI's station transmitted over 300 messages to and received 200 messages from Germany.

Sebold's life story as a double agent was first told in the 1943 book Passport to Treason: The Inside Story of Spies in America by Alan Hynd.

William Gustav Friedemann

William Gustav Friedemann was a principal witness in the Duquesne case. He began working for the FBI as a fingerprint analyst in 1935 and later became an agent after identifying a crucial fingerprint in a kidnapping case. After World War II, he was assigned to Puerto Rico
Puerto Rico
Puerto Rico , officially the Commonwealth of Puerto Rico , is an unincorporated territory of the United States, located in the northeastern Caribbean, east of the Dominican Republic and west of both the United States Virgin Islands and the British Virgin Islands.Puerto Rico comprises an...

, where he pinpointed the group behind the assassination attempt on President Harry Truman. He died of cancer on August 23, 1989, in Stillwater, Oklahoma
Stillwater, Oklahoma
Stillwater is a city in north-central Oklahoma at the intersection of U.S. 177 and State Highway 51. It is the county seat of Payne County, Oklahoma, United States. As of the 2010 census, the city population was 45,688. Stillwater is the principal city of the Stillwater Micropolitan Statistical...

.

Frederick "Fritz" Joubert Duquesne

Born in Cape Colony
Cape Colony
The Cape Colony, part of modern South Africa, was established by the Dutch East India Company in 1652, with the founding of Cape Town. It was subsequently occupied by the British in 1795 when the Netherlands were occupied by revolutionary France, so that the French revolutionaries could not take...

, South Africa, on September 21, 1877, and naturalized a citizen of the United States in 1913, Fritz Joubert Duquesne was a Captain in the Second Boer War
Second Boer War
The Second Boer War was fought from 11 October 1899 until 31 May 1902 between the British Empire and the Afrikaans-speaking Dutch settlers of two independent Boer republics, the South African Republic and the Orange Free State...

. He is also known as "The man who killed Kitchener" since he claimed to have sabotaged and sunk the HMS Hampshire
HMS Hampshire (1903)
HMS Hampshire was a Devonshire-class armoured cruiser of the Royal Navy. She was built by Armstrong Whitworth, Elswick, Tyne and Wear and commissioned in 1905 at a cost of £833,817....

, on which Lord Kitchener
Herbert Kitchener, 1st Earl Kitchener
Field Marshal Horatio Herbert Kitchener, 1st Earl Kitchener KG, KP, GCB, OM, GCSI, GCMG, GCIE, ADC, PC , was an Irish-born British Field Marshal and proconsul who won fame for his imperial campaigns and later played a central role in the early part of the First World War, although he died halfway...

 was en route to Russia
Russia
Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

 in 1916. Duquesne was a German spy at the time and for this act he was awarded the Iron Cross
Iron Cross
The Iron Cross is a cross symbol typically in black with a white or silver outline that originated after 1219 when the Kingdom of Jerusalem granted the Teutonic Order the right to combine the Teutonic Black Cross placed above a silver Cross of Jerusalem....

. Duquesne was also implicated in fraudulent insurance claims, including one that resulted from a fire aboard the British steamship Tennyson which caused the vessel to sink on February 18, 1916. When he was arrested on November 17, 1917, he had in his possession a large file of news clippings concerning bomb explosions on ships, as well as a letter from the Assistant German Vice Consul at Managua, Nicaragua. The letter indicated that: Captain Duquesne was one who has rendered considerable service to the German cause. Duquesne was also ordered to assassinate the American, Frederick Russell Burnham
Frederick Russell Burnham
Frederick Russell Burnham, DSO was an American scout and world traveling adventurer known for his service to the British Army in colonial Africa and for teaching woodcraft to Robert Baden-Powell, thus becoming one of the inspirations for the founding of the international Scouting Movement.Burnham...

, Chief of Scouts for the British Army; however he failed to do so.

In February, 1940, Duquesne was operating a business known as the Air Terminals Company in New York City. After establishing his first contact with Duquesne by letter, Sebold met with him in Duquesne's office. During their initial meeting, Duquesne, who was extremely concerned about the possibility of electronic surveillance devices being present in his office, gave Sebold a note stating that they should talk elsewhere. After relocating to an Automat
Automat
An automat is a fast food restaurant where simple foods and drink are served by coin-operated and bill-operated vending machines.-Concept:Originally, the machines took only nickels...

, the two men exchanged information about members of the German espionage system with whom they had been in contact.

Duquesne provided Sebold with information for transmittal to Germany during subsequent meetings, and the meetings which occurred in Sebold's office were filmed by FBI Agents. Duquesne, who was vehemently anti-British, submitted information dealing with national defense in America, the sailing of ships to British ports, and technology. He also regularly received money from Germany in payment for his services.

On one occasion, Duquesne provided Sebold with photographs and specifications of a new type of bomb being produced in the United States. He claimed that he secured that material by secretly entering the DuPont
DuPont
E. I. du Pont de Nemours and Company , commonly referred to as DuPont, is an American chemical company that was founded in July 1802 as a gunpowder mill by Eleuthère Irénée du Pont. DuPont was the world's third largest chemical company based on market capitalization and ninth based on revenue in 2009...

 plant in Wilmington, Delaware
Wilmington, Delaware
Wilmington is the largest city in the state of Delaware, United States, and is located at the confluence of the Christina River and Brandywine Creek, near where the Christina flows into the Delaware River. It is the county seat of New Castle County and one of the major cities in the Delaware Valley...

. Duquesne also explained how fires could be started in industrial plants. Much of the information Duquesne obtained was the result of his correspondence with industrial concerns. Representing himself as a student, he requested data concerning their products and manufacturing conditions.

In a letter to the Chemical Warfare Service in Washington, D.C., Duquesne requested information on a new gas mask
Gas mask
A gas mask is a mask put on over the face to protect the wearer from inhaling airborne pollutants and toxic gases. The mask forms a sealed cover over the nose and mouth, but may also cover the eyes and other vulnerable soft tissues of the face. Some gas masks are also respirators, though the word...

. He identified himself as a "well-known, responsible and reputable writer and lecturer". At the bottom of the letter, he wrote, "Don't be concerned if this information is confidential, because it will be in the hands of a good, patriotic citizen." A short time later, the information he requested arrived in the mail and a week later it was being read by intelligence officers in Berlin.

Duquesne was brought to trial and was convicted. He was sentenced to serve 18 years in prison on espionage charges, as well as a 2-year concurrent sentence and payment of a $2,000 fine for violation of the Foreign Agents Registration Act
Foreign Agents Registration Act
The Foreign Agents Registration Act is a United States law passed in 1938 requiring that agents representing the interests of foreign powers be properly identified to the American public. The act was passed in response to German propaganda in the lead-up to World War II...

. He served his sentence in Leavenworth Federal Penitentiary in Kansas
Kansas
Kansas is a US state located in the Midwestern United States. It is named after the Kansas River which flows through it, which in turn was named after the Kansa Native American tribe, which inhabited the area. The tribe's name is often said to mean "people of the wind" or "people of the south...

 where he was mistreated and beaten by inmates. In 1954 he was released due to ill health, having served 14 years, and died indigent, at City Hospital on Welfare Island (now Roosevelt Island
Roosevelt Island
Roosevelt Island, known as Welfare Island from 1921 to 1973, and before that Blackwell's Island, is a narrow island in the East River of New York City. It lies between the island of Manhattan to its west and the borough of Queens to its east...

), New York City
New York City
New York is the most populous city in the United States and the center of the New York Metropolitan Area, one of the most populous metropolitan areas in the world. New York exerts a significant impact upon global commerce, finance, media, art, fashion, research, technology, education, and...

 on 24 May 1956 at the age of 78 years.

Paul Bante

A native of Germany, Paul Bante served in the German army during World War I. He came to the United States in 1930 and became a naturalized U.S. citizen in 1938.

Bante, formerly a member of the German-American Bund
German-American Bund
The German American Bund or German American Federation was an American Nazi organization established in the 1930s...

, claimed that Germany put him in contact with one of their operatives, Paul Fehse, because of Bante's previous association with a Dr. Ignatz T. Griebl. Before fleeing to Germany to escape prosecution, Dr. Griebl had been implicated in a Nazi spy ring with Guenther Gustave Rumrich, who was tried on espionage charges in 1938.

Bante assisted Paul Fehse in obtaining information about ships bound for Britain with war materials and supplies. Bante claimed that as a member of the Gestapo his function was to create discontent among union workers, stating that every strike would assist Germany.

Sebold met Bante at the Little Casino Restaurant, which was frequented by several members of this spy ring. During one such meeting, Bante advised that he was preparing a bomb fuse, and he subsequently delivered dynamite and detonation caps to Sebold.

Entering a guilty plea to violation of the Foreign Agents Registration Act
Foreign Agents Registration Act
The Foreign Agents Registration Act is a United States law passed in 1938 requiring that agents representing the interests of foreign powers be properly identified to the American public. The act was passed in response to German propaganda in the lead-up to World War II...

, Bante was sentenced to 18 months' imprisonment and was fined $1,000.

Max Blank

Max Blank went to the United States from Germany in 1928. Although he never became a U.S. citizen, Blank had been employed in New York City at a German library and at a book store which catered to German trade.

Paul Fehse, a major figure in this case, informed Germany that Blank, who was acquainted with several members of the spy ring, could secure some valuable information but lacked the funds to do so. Later Fehse and Blank met with Sebold in his office. They told Sebold that Blank could obtain details about rubberized self-sealing airplane gasoline tanks, as well as a new braking device for airplanes, from a friend who worked in a shipyard. However, he needed money to get the information. Blank boasted to agent Sebold that he had been in the espionage business since 1936, but that he had lost interest in recent years because payments from Germany had fallen off.

Blank pleaded guilty to violation of the Foreign Agents Registration Act. He received a sentence of 18 months' imprisonment and a $1,000 fine.

Alfred E. Brokhoff

A native of Germany, Alfred E. Brokhoff, went to the United States in 1923 and became a naturalized citizen in 1929. He was a mechanic for the United States Lines in New York City for 17 years prior to his arrest. Because of his employment on the docks, he knew almost all of the other agents in this group who were working as seamen on various ships.

Brokhoff helped Fehse secure information about the sailing dates and cargoes of vessels destined for England. He also assisted Fehse in transmitting this information to Germany. Also, another German agent, George V. Leo Waalen, reported that he had received information from Brokhoff for transmittal to Germany.

Upon conviction, Brokhoff was sentenced to serve a five-year prison term for violation of the espionage statutes and to serve a two-year concurrent sentence for violation of the Registration Act.

Heinrich Clausing

In September, 1934, German-born Heinrich Clausing went to the United States, where he became a naturalized citizen in 1938. Having served on various ships sailing from New York Harbor since his arrival in the country, he was employed as a cook on the SS Argentine at the time of his arrest.

Closely associated with Franz Stigler, one of the principal contact men for this spy ring, Clausing operated as a courier. He transported microphotographs and other material from the United States to South American ports, from which the information was sent to Germany via Italian airlines. He also established a mail drop in South America for expeditious transmittal of information to Germany by mail. He signed his letters as "Carlos". He received no money but spied to help Germany.

Clausing was convicted and was sentenced to serve eight years for violation of espionage statutes. He also received a two-year concurrent sentence for violation of the Registration Act.

Conradin Otto Dold

Conradin Otto Dold went to the United States from Germany in 1926. He became a U.S. citizen in 1934 under the Seamen's Act
Seamen's Act
The Seamen's Act, formally known as Act to Promote the Welfare of American Seamen in the Merchant Marine of the United States was designed to improve the safety and security of United States seamen....

. Prior to his arrest, he was Chief Steward
Chief Steward
A chief steward is the senior unlicensed crew member working in the Steward's Department of a ship. Since there is no purser on most ships in the United States Merchant Marine, the steward is the senior person in the department, whence its name...

 aboard the SS Siboney of the American Export Lines.

Dold was related to people holding high positions in Germany and was closely associated with other members of the espionage group who worked on ships sailing from New York Harbor. As a courier, Dold carried information from Nazi agents in the United States to contacts in neutral ports abroad for transmittal to Germany.

Dold was sentenced to serve 10 years in prison on espionage charges and received a 2-year concurrent sentence and a fine of $1,000 for violation of the Registration Act.

Rudolf Ebeling

After leaving Germany for the United States in 1925, Rudolf Ebeling was employed as a foreman in the Shipping Department of Harper and Brothers in New York City when he was arrested.

Ebeling obtained information regarding ship sailings and cargoes, which he provided to Paul Fehse for transmittal to Germany. He also furnished such information to Leo Waalen, who delivered the material to Sebold for transmittal.

Upon conviction, Ebeling was sentenced to 5 years in prison on espionage charges. He also received a 2-year concurrent sentence and a $1,000 fine for violating the Registration Act.

Richard Eichenlaub

Richard Eichenlaub, who went to the United States in 1930 and became a citizen in 1936, operated the Little Casino Restaurant in the Yorkville
Yorkville, Manhattan
Yorkville is a neighborhood in the greater Upper East Side, in the Borough of Manhattan in New York City. Yorkville's boundaries include: the East River on the east, 96th Street on the north, Third Avenue on the west and 72nd Street to the south. However, its southern boundary is a subject of...

 Section of New York City. This restaurant was a rendezvous for many members of this spy ring, and Eichenlaub introduced several new members into the group.

Eichenlaub reported to the German Gestapo and often obtained information from his customers who were engaged in national defense production. Through Eichenlaub, dynamite was delivered to Sebold from Bante.

Having entered a plea of guilty to violation of the Registration Act, Eichenlaub was sentenced to pay a fine of $1,000 and to serve 18 months in prison.

Heinrich Carl Eilers

A native of Germany, Heinrich Carl Eilers went to the United States in 1923 and became a citizen in 1932. From 1933 until his arrest, he served as a steward on ships sailing from New York City.

Eilers made a trip from New York to Washington, D.C., to obtain information for Germany from the Civil Aeronautics Authority. His mission, however, was unsuccessful.

At the time of his arrest in New York City by Customs authorities in June, 1940, he had in his possession 20 letters addressed to people throughout Europe. He also had books relating to magnesium and aluminum alloys which had been sent to him by Edmund Carl Heine, one of the principal espionage agents in this group.

Upon conviction, Eilers received a 5-year prison sentence on espionage charges and a concurrent sentence of 2 years' imprisonment and a $1,000 fine under the Registration Act.

Paul Fehse

In 1934, Paul Fehse left Germany for the United States, where he became a citizen in 1938. Since his arrival in the United States, he had been employed as a cook aboard ships sailing from New York Harbor.

Fehse was one of the directing forces in this espionage group. He arranged meetings, directed members' activities, correlated information that had been developed, and arranged for its transmittal to Germany, chiefly through Sebold. Fehse, who was trained for espionage work in Hamburg, Germany, claimed he headed the Marine Division of the German espionage system in the United States.

Having become quite apprehensive and nervous, Fehse made plans to leave the country. He obtained a position on the SS Siboney, which was scheduled to sail from Hoboken, New Jersey
Hoboken, New Jersey
Hoboken is a city in Hudson County, New Jersey, United States. As of the 2010 United States Census, the city's population was 50,005. The city is part of the New York metropolitan area and contains Hoboken Terminal, a major transportation hub for the region...

, for Lisbon
Lisbon
Lisbon is the capital city and largest city of Portugal with a population of 545,245 within its administrative limits on a land area of . The urban area of Lisbon extends beyond the administrative city limits with a population of 3 million on an area of , making it the 9th most populous urban...

, Portugal
Portugal
Portugal , officially the Portuguese Republic is a country situated in southwestern Europe on the Iberian Peninsula. Portugal is the westernmost country of Europe, and is bordered by the Atlantic Ocean to the West and South and by Spain to the North and East. The Atlantic archipelagos of the...

, on March 29, 1941. He planned to desert ship in Lisbon and return to Germany.

However, before he could leave the United States, Fehse was arrested by FBI Agents. Upon arrest, he admitted sending letters to Italy for transmittal to Germany, as well as reporting the movements of British ships.

On April 1, 1941, Fehse was sentenced on a plea of guilty to serve one year and one day in prison for violation of the Registration Act. He subsequently pleaded guilty to espionage and received a prison sentence of 15 years.

Edmund Carl Heine

A native of Germany, Edmund Carl Heine went to the United States in 1914 and became a naturalized citizen in 1920. Until 1938, he held various positions in the foreign sales and service department of Ford Motor Company
Ford Motor Company
Ford Motor Company is an American multinational automaker based in Dearborn, Michigan, a suburb of Detroit. The automaker was founded by Henry Ford and incorporated on June 16, 1903. In addition to the Ford and Lincoln brands, Ford also owns a small stake in Mazda in Japan and Aston Martin in the UK...

 and Chrysler Corporation. His employment took him to the West Indies, South America
South America
South America is a continent situated in the Western Hemisphere, mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere. The continent is also considered a subcontinent of the Americas. It is bordered on the west by the Pacific Ocean and on the north and east...

, Spain
Spain
Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

, and Berlin
Berlin
Berlin is the capital city of Germany and is one of the 16 states of Germany. With a population of 3.45 million people, Berlin is Germany's largest city. It is the second most populous city proper and the seventh most populous urban area in the European Union...

, Germany
Germany
Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

. Heine was closely associated with Dr. Hans Luther
Hans Luther
Hans Luther was a German politician and Chancellor of Germany.-Biography:Born in Berlin, Luther started in politics in 1907 by becoming the town councillor in Magdeburg. He continued on becoming secretary of the German Städtetag in 1913 and then mayor of Essen in 1918...

, former German Ambassador in Washington, D.C., and Prince Louis Ferdinand
Louis Ferdinand, Prince of Prussia
-Children:* Prince Friedrich Wilhelm of Prussia , married firstly Waltraud Freytag on 22 August 1967 in Plön, Schleswig-Holstein, Germany; secondly Ehrengard von Reden on 23 April 1976; thirdly Sibylle Kretschmer. He renounced his succession rights on 18 September 1967...

 of Berlin.

Heine sent letters from Detroit, Michigan
Detroit, Michigan
Detroit is the major city among the primary cultural, financial, and transportation centers in the Metro Detroit area, a region of 5.2 million people. As the seat of Wayne County, the city of Detroit is the largest city in the U.S. state of Michigan and serves as a major port on the Detroit River...

, to Lilly Stein, one of the German spies Sebold was instructed to contact. The letters contained detailed technical data regarding the military, aircraft construction, and various industries. He also wrote to aircraft companies to obtain information about their production, number of employees, and the time required to construct military planes. Later it was discovered that Heine was also the mysterious "Heinrich" who supplied the spy ring with aerial photographs.

After obtaining technical books relating to magnesium and aluminum alloys, Heine sent the materials to Heinrich Eilers. To ensure safe delivery of the books to Germany in case they did not reach Eilers, Heine indicated the return address on the package as the address of Lilly Stein.

Upon conviction of violating the Registration Act, Heine received a $5,000 fine and a 2-year prison sentence.

Felix Jahnke

In 1924, Felix Jahnke left Germany for the United States, where he became a naturalized citizen in 1930. Jahnke had attended military school in Germany and had served in the German army as a radio operator.

Jahnke and Axel Wheeler-Hill secured the services of Josef Klein, a radio technician, in building a portable radio set for Jahnke's apartment in the Bronx. Jahnke used this radio to transmit messages, which were intercepted by the FBI, to Germany. He also visited the docks in New York Harbor to obtain information about any vessels bound for England.

After pleading guilty to violation of the Registration Act, Jahnke was sentenced to serve 20 months in prison and to pay a $1,000 fine.

Gustav Wilhelm Kaercher

Gustav Wilhelm Kaercher went to the United States in 1923, becoming a citizen in 1931. He served in the German army during World War I and was a former leader of the German Bund in New York. During visits to Germany, he was seen to have worn a German army officer's uniform. At the time of his arrest, he was engaged in designing power plants for the American Gas and Electric Company in New York City.

Kaercher was arrested with Paul Scholtz, who had just handed Kaercher a table of call letters and frequencies for transmitting information to Germany by radio.

As a result of his guilty plea to charges of violating the Registration Act, Kaercher received a $2,000 fine and a prison sentence of 22 months.

Josef Klein

A native of Germany, Josef Klein went to the United States in 1925; he did not become a citizen. Klein, a photographer and lithographer, had been interested in the building and operation of shortwave radio transmitters.

Klein constructed a portable shortwave radio transmitting-and-receiving set for Felix Jahnke and Axel Wheeler- Hill. When he built the radio set, Klein knew it would be used for transmitting messages to Germany.

Upon conviction, Klein received a sentence of five years' imprisonment on espionage charges and a concurrent sentence of two years' imprisonment under the Registration Act.

Hartwig Richard Kleiss

Born in Germany, Hartwig Richard Kleiss went to the United States in 1925 and became a naturalized citizen six years later. Following his arrival in the United States, he was employed as a cook on various ships.

Kleiss obtained information for Germany, including blueprints of the SS America which showed the locations of newly installed gun emplacements. He included information about how guns would be brought into position for firing. Kleiss also obtained details on the construction and performance of new speedboats being developed by the United States Navy, which he submitted to Sebold for transmittal to Germany.

Kleiss had originally chosen to stand trial. However, after cross-examination, he changed his plea to guilty on charge of espionage and received an eight-year prison sentence.

Herman W. Lang

Herman W. Lang went to the United States from Germany in 1927 and became a citizen in 1939. He was one of the four people Sebold had been told to contact in the United States.

Until his arrest, Lang had been employed by the Carl L. Norden Corp. which manufactured the Top Secret Norden bombsight
Norden bombsight
The Norden bombsight was a tachometric bombsight used by the United States Army Air Forces and the United States Navy during World War II, and the United States Air Force in the Korean and the Vietnam Wars to aid the crew of bomber aircraft in dropping bombs accurately...

 and other highly confidential materials essential to the national defense of the United States. The Norden had been considered a critical wartime instrument by the United States Army Air Forces
United States Army Air Forces
The United States Army Air Forces was the military aviation arm of the United States of America during and immediately after World War II, and the direct predecessor of the United States Air Force....

 and American bombardiers were required to take an oath during their training stating that they would defend its secret with their own life, if needed. During a visit to Germany in 1938, Lang conferred with German military authorities and reconstructed plans of the confidential materials from memory. It is perhaps because of Lang that the bombsight instruments used by Luftwaffe
Luftwaffe
Luftwaffe is a generic German term for an air force. It is also the official name for two of the four historic German air forces, the Wehrmacht air arm founded in 1935 and disbanded in 1946; and the current Bundeswehr air arm founded in 1956....

 bombers during the war were fairly similar to the United States' Norden bombsight. The Lotfernrohr 3 and the BZG 2 in 1942 used a similar set of gyroscopes that provided a stabilized platform for the bombardier to sight through, although the more complex interaction between the bombsight and autopilot was not used. Later in the war, Luftwaffe bombers used the Carl Zeiss Lotfernrohr 7
Lotfernrohr 7
The Carl Zeiss Lotfernrohr 7, or Lotfe 7, was the primary bombsight used in most Luftwaffe level bombers, similar to the United States' Norden bombsight, but much simpler to operate and maintain. Several models were produced and eventually completely replaced the simpler Lotfernrohr 3 and BZG 2...

, or Lotfe 7, which had an advanced mechanical system similar to the Norden bombsight, but was much simpler to operate and maintain.

Upon conviction, Lang received a sentence of 18 years in prison on espionage charges and a two-year concurrent sentence under the Registration Act.

Evelyn Clayton Lewis

A native of Arkansas
Arkansas
Arkansas is a state located in the southern region of the United States. Its name is an Algonquian name of the Quapaw Indians. Arkansas shares borders with six states , and its eastern border is largely defined by the Mississippi River...

, Evelyn Clayton Lewis had been living with Fritz Joubert Duquesne in New York City. Lewis had expressed her anti-British and anti-Semitic feelings during her relationship with Duquesne. She was aware of his espionage activities and condoned them. While she was not active in obtaining information for Germany, she helped Duquesne prepare material for transmittal abroad.

Upon a guilty plea, Lewis was sentenced to serve one year and one day in prison for violation of the Registration Act.

Rene Emanuel Mezenen

Rene Emanuel Mezenen, a Frenchman, claimed U.S. citizenship through the naturalization of his father. Prior to his arrest, he was employed as a steward in the Pan American transatlantic clipper service.

The German Intelligence Service
Abwehr
The Abwehr was a German military intelligence organisation from 1921 to 1944. The term Abwehr was used as a concession to Allied demands that Germany's post-World War I intelligence activities be for "defensive" purposes only...

 in Lisbon, Portugal, asked Mezenen to act as a courier, transmitting information between the United States and Portugal on his regular commercial aircraft trips. As a steward he was able to deliver documents from New York to Lisbon in 24hrs. He accepted this offer for financial gain. In the course of flights across the Atlantic, Mezenen also reported his observance of convoys sailing for England. He also became involved in smuggling platinum from the United States to Portugal. When discussing his courier role with agent Sebold, Mezenen boasted that he hid the spy letters so well that if they were found it would have taken two to three weeks to repair the airplane.

Following a plea of guilty, Mezenen received an eight year prison term for espionage and two concurrent years for registration violations.

Carl Reuper

Having come to the United States from Germany in 1929, Carl Reuper became a citizen in 1936. Prior to his arrest, he served as an inspector for the Westinghouse Electric Company
Westinghouse Electric Company
Westinghouse Electric Company LLC is a nuclear power company, offering a wide range of nuclear products and services to utilities throughout the world, including nuclear fuel, service and maintenance, instrumentation and control and advanced nuclear plant designs...

 in Newark, New Jersey
Newark, New Jersey
Newark is the largest city in the American state of New Jersey, and the seat of Essex County. As of the 2010 United States Census, Newark had a population of 277,140, maintaining its status as the largest municipality in New Jersey. It is the 68th largest city in the U.S...

.

Reuper obtained photographs for Germany relating to national defense materials and construction, which he obtained from his employment. He arranged radio contact with Germany through the station established by Felix Jahnke. On one occasion, he conferred with Sebold regarding Sebold's facilities for communicating with German authorities.

Upon conviction, Reuper was sentenced to 16 years' imprisonment on espionage charges and 2 years' concurrent sentence under the Registration Act.

Everett Minster Roeder

Born in the Bronx, New York, Everette Minster Roeder was a draftsman and designer of confidential materials for the U.S. Army and Navy.

Sebold had delivered microphotograph instructions to Roeder, as ordered by German authorities. Roeder and Sebold met in public places and proceeded to spots where they could talk privately. In 1936, Roeder had visited Germany and was requested by German authorities to act as an espionage agent. Primarily due to monetary rewards he would receive, Roeder agreed.

At the time of his arrest, Roeder had 16 guns in his home in Long Island, New York.

Roeder entered a guilty plea to the charge of espionage and was sentenced to 16 years in prison.

Paul Alfred W. Scholz

A German native, Paul Scholz went to the United States in 1926 but never attained citizenship. He had been employed in German book stores in New York City, where he disseminated Nazi propaganda.

Scholz had arranged for Josef Klein to construct the radio set used by Felix Jahnke and Axel Wheeler-Hill. At the time of his arrest, Scholz had just given Gustav Wilhelm Kaercher a list of radio call letters and frequencies. He also encouraged members of this spy ring to secure data for Germany and arranged contacts between various German agents.

Upon conviction, Scholz was sentenced to 16 years' imprisonment for espionage with 2 years' concurrent sentence under the Registration Act.

George Gottlob Schuh

George Schuh, a native of Germany, went to the United States in 1923. He became a citizen in 1939 and was employed as a carpenter
Carpenter
A carpenter is a skilled craftsperson who works with timber to construct, install and maintain buildings, furniture, and other objects. The work, known as carpentry, may involve manual labor and work outdoors....

.

As a German agent, he sent information directly to the Gestapo in Hamburg, Germany, from the United States. Schuh had provided Alfred Brokhoff information that Winston Churchill
Winston Churchill
Sir Winston Leonard Spencer-Churchill, was a predominantly Conservative British politician and statesman known for his leadership of the United Kingdom during the Second World War. He is widely regarded as one of the greatest wartime leaders of the century and served as Prime Minister twice...

 had arrived in the United States on the HMS George V
HMS King George V (41)
HMS King George V was the lead ship of the five British King George V-class battleships of the Royal Navy. Laid down in 1937 and commissioned in 1940, King George V operated during the Second World War as part of the British Home and Pacific Fleets...

. He also furnished information to Germany concerning the movement of ships carrying materials and supplies to Britain.

Having pleaded guilty to violation of the Registration Act, Schuh received a sentence of 18 months in prison and a $1,000 fine.

Erwin Wilhelm Siegler

Erwin Wilhelm Siegler went to the United States from Germany in 1929 and attained citizenship in 1936. He had served as chief butcher on the SS America
SS America (1940)
SS America was an ocean liner built in 1940 for the United States Lines and designed by the noted naval architect William Francis Gibbs. She carried many names in the 54 years between her construction and her 1994 wrecking, as she served as the SS America , the USS West Point, the SS Australis, the...

 until it was taken over by the U.S. Navy.

A courier, Siegler brought microphotographic instructions to Sebold from German authorities on one occasion. He also had brought $2,900 from German contacts abroad to pay Lilly Stein, Duquesne, and Roeder for their services and to buy a bomb sight. He served the espionage group as an organizer and contact man, and he also obtained information about the movement of ships and military defense preparations at the Panama Canal
Panama Canal
The Panama Canal is a ship canal in Panama that joins the Atlantic Ocean and the Pacific Ocean and is a key conduit for international maritime trade. Built from 1904 to 1914, the canal has seen annual traffic rise from about 1,000 ships early on to 14,702 vessels measuring a total of 309.6...

.

Subsequent to his conviction, Siegler was sentenced to 10 years' imprisonment on espionage charges and a concurrent 2-year term for violation of the Registration Act.

Oscar Richard Stabler

Born in Germany, Oscar Richard Stabler went to the United States in 1923 and became a citizen in 1933. He had been employed primarily as a barber
Barber
A barber is someone whose occupation is to cut any type of hair, and to shave or trim the beards of men. The place of work of a barber is generally called a barbershop....

 aboard transoceanic ships. In December, 1940, British authorities in Bermuda found a map of Gibraltar
Gibraltar
Gibraltar is a British overseas territory located on the southern end of the Iberian Peninsula at the entrance of the Mediterranean. A peninsula with an area of , it has a northern border with Andalusia, Spain. The Rock of Gibraltar is the major landmark of the region...

 in his possession. He was detained for a short period before being released. A close associate of Conradin Otto Dold, Stabler served as a courier, transmitting information between German agents in the United States and contacts abroad.

Stabler was convicted and sentenced to serve five years in prison for espionage and a two-year concurrent term under the Registration Act.

Heinrich Stade

Heinrich Stade went to the United States from Germany in 1922 and became a citizen in 1929. He had been a musician and publicity agent in New York. He told agent Sebold he had been in the German Gestapo since 1936 and boasted that he knew everything in the spy business.

Stade had arranged for Paul Bante's contact with Sebold and had transmitted data to Germany regarding points of rendezvous for convoys carrying supplies to England.

Stade was arrested while playing in the orchestra at an inn in Long Island, New York.

Following a guilty plea to violation of the Registration Act, Stade was fined $1,000 and received a 15-month prison sentence.

Lilly Barbara Carola Stein

Born in Vienna, Austria, Lilly Stein met Hugo Sebold, the espionage instructor who had trained William Sebold (the two men were not related) in Hamburg, Germany. She enrolled in this school and was sent to the United States in 1939. In New York, she worked as an artist's model and was said to have moved in New York's social circles.

Stein was one of the people to whom Sebold had been instructed to deliver microphotograph instructions upon his arrival in the United States. She frequently met with Sebold to give him information for transmittal to Germany, and her address was used as a return address by other agents in mailing data for Germany.

Stein pleaded guilty and received sentences of 10 years' and 2 concurrent years' imprisonment for violations of espionage and registration statutes, respectively.

Franz Joseph Stigler

In 1931, Franz Stigler left Germany for the United States, where he became a citizen in 1939. He had been employed as a crew member and chief baker aboard U.S. ships until his discharge from the when the U.S. Navy converted that ship into .

His constant companion was Erwin Siegler, and they operated as couriers in transmitting information between the United States and German agents aboard. Stigler sought to recruit amateur radio operators in the United States as channels of communication to German radio stations. He had also observed and reported defense preparations in the Panama Canal Zone
Panama Canal Zone
The Panama Canal Zone was a unorganized U.S. territory located within the Republic of Panama, consisting of the Panama Canal and an area generally extending 5 miles on each side of the centerline, but excluding Panama City and Colón, which otherwise would have been partly within the limits of...

 and had met with other German Agents to advise them in their espionage pursuits.

In January 1941, Stigler asked agent Sebold to radio Germany that Prime Minister Winston Churchill had arrived secretly in the U.S. on the H.M.S. King George V with Lord Halifax.

Upon conviction, Stigler was sentenced to serve 16 years in prison on espionage charges with 2 concurrent years for registration violations.

Erich Strunck

A seaman aboard the ships of the United States Lines since his arrival in the United States, Erich Strunck went to the United States from Germany in 1927. He became a naturalized citizen in 1935.

As a courier, Strunck carried messages between German agents in the United States and Europe. He requested authority to steal the diplomatic bag of a British officer traveling aboard his ship and to dispose of the officer by pushing him overboard. Sebold convinced him that it would be too risky to do so.

Strunck was convicted and sentenced to serve 10 years in prison on espionage charges. He also was sentenced to serve a two-year concurrent term under the Registration Act.

Leo Waalen

Leo Waalen was born in Danzig while that city was part of Germany. He entered the United States by "jumping ship" about 1935. He was a painter for a small boat company which was constructing small craft for the U.S. Navy.

Waalen gathered information about ships sailing for England. He also obtained a confidential booklet issued by the FBI which contained precautions to be taken by industrial plants to safeguard national defense materials from sabotage. Waalen also secured government contracts listing specifications for materials and equipment, as well as detailed sea charts of the United States Atlantic coastline.

In May 1941, the SS Robin Moor
SS Robin Moor
SS Robin Moor was a Hog Islander steamship that sailed under the American flag from 1919 until being sunk by on 21 May 1941, before the United States had entered World War II, after allowing the passengers and crew to disembark...

 was carrying nine officers, 29 crewmen, seven or eight passengers, and a commercial cargo from New York to Mozambique
Mozambique
Mozambique, officially the Republic of Mozambique , is a country in southeastern Africa bordered by the Indian Ocean to the east, Tanzania to the north, Malawi and Zambia to the northwest, Zimbabwe to the west and Swaziland and South Africa to the southwest...

 via South Africa, without a protective convoy. On 21 May, the ship was stopped by U-69 in the tropical Atlantic 750 miles west of the British-controlled port of Freetown, Sierra Leone. Although the SS Robin Moor was flying the flag of a neutral country, her mate
Chief Mate
A Chief Mate or Chief Officer, usually also synonymous with the First Mate or First Officer , is a licensed member and head of the deck department of a merchant ship...

 was told by the U-boat crew that they had decided to "let us have it." After a brief period for the ship's crew and passengers to board her four lifeboats, the U-boat fired a torpedo and then shelled the vacated ship. Once the ship sank beneath the waves, the submarine's crew pulled up to Captain W. E. Myers' lifeboat, left him with four tins of ersatz bread and two tins of butter, and explained that the ship had been sunk because she was carrying supplies to Germany's enemy. In October 1941, federal prosecutors adduced testimony that Leo Waalen, one of the fourteen accused men who had pled not guilty to all charges, had submitted the sailing date of the SS Robin Moor for radio transmission to Germany, five days before the ship began her final voyage.

Following his conviction, Waalen was sentenced to 12 years in prison for espionage and a concurrent 2-year term for violation of the Registration Act.

Adolf Henry August Walischewski

A German native, Walischewski had been a seaman since maturity. He became a naturalized citizen in 1935.

Walischewski became connected with the German espionage system through Paul Fehse. His duties were confined to those of courier, carrying data from agents in the United States to contacts abroad.

Upon conviction, Walischewski received a five-year prison sentence on espionage charges, as well as a two-year concurrent sentence under the Registration Act.

Else Weustenfeld

Else Weustenfeld arrived in the United States from Germany in 1927 and became a citizen 10 years later. From 1935 until her arrest, she was a secretary for a law firm representing the German Consulate in New York City.

Weustenfeld was thoroughly acquainted with the German espionage system and delivered funds to Duquesne which she had received from Lilly Stein, her close friend.

She lived in New York City with Hans W. Ritter, a principal in the German espionage system. His brother, Nickolaus Ritter, was the "Dr. Renken" who had enlisted Sebold as a German agent. In 1940, Weustenfeld visited Hans Ritter in Mexico, where he was serving as a paymaster for the German Intelligence Service.

After pleading guilty, Else Weustenfeld was sentenced to five years' imprisonment on charge of espionage and two concurrent years on a charge of registration violations.

Axel Wheeler-Hill

Axel Wheeler-Hill went to the United States in 1923 from his native land of Russia
Russia
Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

. He was naturalized as a citizen in 1929 and was employed as a truck driver.

Wheeler-Hill obtained information for Germany regarding ships sailing to Britain from New York Harbor. With Felix Jahnke, he enlisted the aid of Paul Scholz in building a radio set for sending coded messages to Germany.

Following conviction, Wheeler-Hill was sentenced to serve 15 years in prison for espionage and 2 concurrent years under the Registration Act.

Bertram Wolfgang Zenzinger

Born in Germany, Bertram Wolfgang Zenzinger went to the United States in 1940 as a naturalized citizen of the Union of South Africa
Union of South Africa
The Union of South Africa is the historic predecessor to the present-day Republic of South Africa. It came into being on 31 May 1910 with the unification of the previously separate colonies of the Cape, Natal, Transvaal and the Orange Free State...

. His reported reason for coming to the United States was to study mechanical dentistry in Los Angeles, California
Los Angeles, California
Los Angeles , with a population at the 2010 United States Census of 3,792,621, is the most populous city in California, USA and the second most populous in the United States, after New York City. It has an area of , and is located in Southern California...

.

In July, 1940, Zenzinger received a pencil for preparing invisible messages for Germany in the mail from Siegler. He sent several letters to Germany through a mail drop in Sweden outlining details of national defense materials.

Zenzinger was arrested by FBI Agents on April 16, 1941. Pleading guilty, he received 18 months in prison for violation of the Registration Act and 8 years' imprisonment for espionage.
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