He was 19 years old when he was enlisted (2).
He was enlisted and mustered into service on 3 October 1861 (1, 2). He was enlisted at Philadelphia, Pennsylvania (2). He was mustered in as a private, at Philadelphia, Pennsylvania (2). He served as a private in company D (1).
He was not on the muster-out roll when the regiment mustered out (1).
1 Bates, Samuel Penniman. History of Pennsylvania volunteers, 1861-5. Harrisburg: B. Singerly, state printer, 1869-71. 5 volumes. 'Ninety-first regiment', volume 3, pages 186-233. (In the roster) (John Bingham)
2 Civil War Veterans' Card File, available at the Pennsylvania State Archives, searched 8 Aug 2004 (John Bingham)
[I did not find an entry for him in the index on <www.ancestry.com> to the pension index by name (searched March 2007)]
[I did not find an entry for him in the index on <www.ancestry.com> to the 1890 veteran's census (searched June 2007)--but one John Bingham in Maryland had no identifying information]