Samuel Penniman Bates

Samuel Penniman Bates (January 29, 1827 – July 14, 1902) was an American educator, author, and historian. He is known for his reference works on the American Civil War, including his multi-volume ''History of Pennsylvania Volunteers, 1861–1865'' which remains a frequently-used, preliminary research resource due to its narrative descriptions of unit activities and rosters of the regiments raised in the Commonwealth of Pennsylvania. Provided by Wikipedia