1. The first American flag was flown in New Hampshire on April 15, 1776, at the Battle of Bennington. The flag was designed and sewn by Mary Young Pickersgill and served as an inspiration for the flag that would eventually become the symbol of America.

2. On April 15, 1947, the historic Mount Washington Cog Railway opened for its first tourist season. The railway has been operating for over 150 years and is the world's first mountain-climbing cog railway.

3. In 1960, the first American astronaut, Alan Shepard Jr., was born in East Derry, New Hampshire. Shepard was part of the Apollo 14 crew that landed on the moon in 1971.

4. On April 15, 1938, the Mount Washington Hotel in Bretton Woods was the site of the Bretton Woods Conference, where representatives from 44 nations came together to establish the International Monetary Fund and the World Bank.

5. New Hampshire was admitted to the Union on June 21, 1788, but it was on April 15, 1959, that Governor Lane Dwinell signed a bill officially adopting the state motto "Live Free or Die." The motto reflects New Hampshire's longstanding commitment to individual freedom and independence.