Abner Doubleday, the grandson of a veteran of the American Revolution, was born June 26, 1819, at Ballston Spa, New York, twenty miles north of Albany. Abner attended school in Auburn and later Cooperstown, New York, before entering the United States Military Academy in 1838. Graduating in 1842, he stood number twenty-four academically in a class of fifty-six.
"Abner Doubleday and the Third Seminole War,"
Florida Historical Quarterly: Vol. 59
, Article 6.
Available at: https://stars.library.ucf.edu/fhq/vol59/iss3/6