Mackey, Charles - Age 23, Year: 1864 - 12th US Colored Heavy Artillery

Chicago citation style
War Department. The Adjutant General's Office. 3/4/1907-9/18/1947. Mackey, Charles - Age 23, Year: 1864 - 12th US Colored Heavy Artillery. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/38641426. (Accessed May 22, 2018.)
APA citation style
War Department. The Adjutant General's Office. 3/4/1907-9/18/1947, Mackey, Charles - Age 23, Year: 1864 - 12th US Colored Heavy Artillery. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/38641426
MLA citation style
War Department. The Adjutant General's Office. 3/4/1907-9/18/1947. Retrieved from the Digital Public Library of America <http://catalog.archives.gov/id/38641426>.
Note: These citations are programmatically generated and may be incomplete.