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Prisoner of war (POW) Newell Burch also recorded Andersonville's poor conditions in his diary. A member of the 154th New York Volunteer Infantry, Burch was captured on the first day of the Battle of Gettysburg; he was first imprisoned at Belle Isle in Richmond, Virginia and then Andersonville. He is credited with having been the longest-held Union prisoner of war during the Civil War, having survived a total of 661 days in Confederate hands. His diary is in the collection of the Dunn County Historical Society in Menomonie, Wisconsin; a mimeographed copy is held by the Wisconsin Historical Society.