Hellenic Traders refers to a series of historical fiction

Historical fiction

Historical fiction tells a story that is set in the past. That setting is usually real and drawn from history, and often contains actual historical persons, but the principal characters tend to be fictional...

 books published by TOR

Tor Books

Tor Books is one of two imprints of Tom Doherty Associates LLC, based in New York City. It is noted for its science fiction and fantasy titles. Tom Doherty Associates also publishes mainstream fiction, mystery, and occasional military history titles under its Forge imprint. The company was founded...

 and written by H.N. Turteltaub (a pseudonym of Harry Turtledove

Harry Turtledove

Harry Norman Turtledove is an American novelist, who has produced works in several genres including alternate history, historical fiction, fantasy and science fiction.- Life :...

). The books center around cousins Menedemos and Sostratos who work as seaborne traders in the years following the death of Alexander the Great. The series is notable for a high degree of historical accuracy.

The series currently consists of four books:

• Over the Wine Dark Sea
  Over the Wine Dark Sea
  Over the Wine Dark Sea is a novel by H.N. Turteltaub . It takes place in the years shortly after the death of Alexander the Great, and centers on a pair of Greek cousins from Rhodes, Menedemos and Sostratos, who work as sea-going traders...
  
  
• The Gryphon's Skull
  The Gryphon's Skull
  The Gryphon's Skull is a historical fiction novel written by H. N. Turteltaub. It follows the adventures of Menedemos and his cousin, Sostratos...
  
  
• The Sacred Land
  The Sacred Land
  The Sacred Land is the third book in the Hellenic Traders series by H N Turteltaub. Like the others in the series it is a work of historical fiction concerning the adventures of a pair of Greek traders from Rhodes.- Plot :...
  
  
• Owls to Athens
  Owls to Athens
  Owls to Athens is the fourth book in the Hellenic Traders series by H N Turteltaub. Like the others in the series it is a work of historical fiction concerning the adventures of a pair of Greek traders from Rhodes...
  
  

The same author also wrote Justinian

Justinian (novel)

Justinian , was published in 1998 by Tor Books. It is a novel by American writer Harry Turtledove writing under the pseudonym H. N. Turteltaub, a name he uses when writing historical fiction....

, which takes place in the early Byzantine Empire

Byzantine Empire

The Byzantine Empire was the Eastern Roman Empire during the periods of Late Antiquity and the Middle Ages, centred on the capital of Constantinople. Known simply as the Roman Empire or Romania to its inhabitants and neighbours, the Empire was the direct continuation of the Ancient Roman State...

. While not connected with the Hellenic Traders series, it still deals with the same area.