The Chemung County History Museum presents the history of the Chemung River Valley, New York and Pennsylvania. Library highlights include information on celebrated author Mark Twain's (1835-1910) life in Elmira, New York and research, official documentation, and personal accounts of the Elmira Prison Camp. The camp was in use between 1864 and 1865 and housed Confederate prisoners of the Civil War.
The museum offers exhibits, educational programs, guided walking tours, outreach programs, traveling trunks, a National History Day competition, an annual Civil War lecture series, and research library access. Library access is free to members and students. The website offers historical photographs.