The American Independence Museum is a historic house museum located in Exeter, New Hampshire. Its 1-acre (0.40 ha) campus includes two buildings: the Ladd-Gilman House, a registered National Historic Landmark built in 1721 by Nathaniel Ladd, and the Folsom Tavern, built in 1775 by Colonel Samuel Folsom. The museum was opened in 1991 after a rare copy of the Declaration of Independence known as a Dunlap Broadside was found in the Ladd-Gilman house, 200 years after its arrival in Exeter. It is the centerpiece of the museum’s collection.