He was born in 1825/26. [source: date: 4 (35 in 1861)]
When he enlisted, he was living in Philadelphia, Pennsylvania. [source: 4]
He enlisted and was mustered into service as a private on 28 October 1861, at Philadelphia, Pennsylvania. He was a private in company B. [sources: 1, 4 (14 Feb 62!), 5, 6]
He was discharged on 10 January 1863 on surgeon's certificate of disability. He was a private, in company B. [sources: 1 (Dec 62), 2, 4 (Dec 62), 5, 6]
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) (Daniel Bolen)
2 consolidated morning report, 91st PA, 8 February 1863 (Daniel Bolen)
3 company B [first] descriptive roll, entry 14 (Daniel Bolin) [no information]
4 Civil War Veterans' Card File, available at the Pennsylvania State Archives, searched 30 May 2004 (Daniel Bolen; rolls have 'Bolin')
5 index to compiled service records of volunteer Union soldiers who served in organizations from the state of Pennsylvania (Daniel Bolen)
6 index to compiled service records of volunteer Union soldiers who served in organizations from the state of Pennsylvania (Daniel Bolin)