1679    New Hampshire becomes a county of the Massachusetts Bay Colony.

1788    New Hampshire ratifies the Constitution of the United States and is admitted as the 9th state in the United States.

1804    New Hampshire approves the Twelfth Amendment to the United States Constitution, ratifying the document.

1905    Russo-Japanese War: In New Hampshire, USA, the Treaty of Portsmouth, mediated by US President Theodore Roosevelt, ends the war.

1934    The strongest surface wind gust in the world at 231 mph, is measured on the summit of Mount Washington, New Hampshire.

1939    The U.S. Navy submarine USS ''Squalus'' sinks off the coast of New Hampshire during a test dive, causing the death of 24 sailors and two civilian technicians. The remaining 32 sailors and one civilian naval architect are rescued the following day.

1964    New Hampshire Lottery: New Hampshire becomes the first U.S. state to legally sell lottery tickets in the 20th century.

2003    New Hampshire's famous Old Man of the Mountain collapses.