1. On August 20, 1968, the U.S. Air Force lost a nuclear bomb in Greenland, which was never recovered. The incident, known as the "Thule Air Base B-52 crash," involved a B-52 bomber crashing near Thule Air Base and releasing four hydrogen bombs, one of which was never found. The nuclear material in the bomb has not been recovered, and some experts fear it may pose a threat to the environment and public health.

2. On August 20, 1775, Colonel John Stark led a group of New Hampshire soldiers to victory against British forces at the Battle of Bennington. The battle, which took place in Walloomsac, New York, was a significant turning point in the American Revolutionary War, and Stark's victory cemented his reputation as a skilled military leader.

3. On August 20, 1933, the Civilian Conservation Corps (CCC) established a camp in Whitefield, New Hampshire. The CCC was a New Deal program that employed young men to work on conservation and infrastructure projects across the country. The Whitefield camp was one of several in New Hampshire, and the CCC's work helped shape many of the state's parks and forests.

4. On August 20, 1814, the Treaty of Ghent was signed, officially ending the War of 1812 between the United States and Great Britain. While the treaty did not address several key issues that had led to the war, such as maritime rights and British impressment of American sailors, it did establish a basis for future peaceful relations between the two countries.

5. On August 20, 1920, the 19th Amendment to the U.S. Constitution was ratified, guaranteeing women the right to vote. The amendment was a major victory for the women's suffrage movement, and New Hampshire played a key role in its passage. The state was one of the first to grant women the right to vote in state elections, in 1917, and its suffragists helped lobby for the amendment's passage in Congress.