1. On December 13, 1822, the New Hampshire Legislature voted to incorporate the town of Claremont. Previously known as "The Place," the town was named after the Earl of Clare, a British aristocrat who helped to negotiate the Treaty of Paris that ended the American Revolution.

2. In 1854, on December 13th, the first meeting of the New Hampshire Grange took place in Concord. The Grange, also known as the Patrons of Husbandry, was a fraternal organization for farmers that focused on education, community service, and political advocacy.

3. On December 13, 1865, New Hampshire ratified the Thirteenth Amendment to the U.S. Constitution, which abolished slavery and involuntary servitude. New Hampshire was the ninth state to ratify the amendment, ensuring its passage into law.

4. In 1901, December 13th marked the opening of the New Hampshire College of Agriculture and the Mechanic Arts (now the University of New Hampshire) in Durham. The college was established to provide practical education for farmers and industrial workers, and its first graduating class consisted of just two students.

5. December 13, 1968, was a significant day in New Hampshire politics, as Governor John W. King became the first Democrat to win re-election in the state in over 80 years. King, who had been first elected in 1962, went on to serve a total of four terms as governor until 1972.