1. The New Hampshire Historical Society was incorporated on February 19, 1823. The society is a nonprofit organization that is committed to preserving and showcasing New Hampshire's history. Its collections include over 2.5 million objects, documents, and photographs.

2. On February 19, 1909, the New Hampshire State Library was established. The library is located in Concord and serves as the state's primary research library. Its collections include over 350,000 books, documents, and digital resources.

3. The first recorded game of ice hockey in the United States was played on February 19, 1883, in Concord, New Hampshire. The game was played between two teams of Dartmouth College students on a frozen pond.

4. On February 19, 1942, President Franklin D. Roosevelt issued an executive order that authorized the internment of Japanese Americans during World War II. Over 120,000 Japanese Americans, two-thirds of whom were U.S. citizens, were forcibly relocated to internment camps.

5. On February 19, 1960, the U.S. Army approved plans to build the White Mountains Missile Base in New Hampshire. The base was designed to house nuclear missiles and was operational from 1961 to 1963. The base was decommissioned in 1966 and is now the site of a state park.