Long, John - Age 21, Year: 1864 - 12th US Colored Heavy Artillery - United States Colored Troops: Artillery Organizations

Chicago citation style
War Department. The Adjutant General's Office. 3/4/1907-9/18/1947. Long, John - Age 21, Year: 1864 - 12th US Colored Heavy Artillery - United States Colored Troops: Artillery Organizations. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/22220289. (Accessed June 25, 2018.)
APA citation style
War Department. The Adjutant General's Office. 3/4/1907-9/18/1947, Long, John - Age 21, Year: 1864 - 12th US Colored Heavy Artillery - United States Colored Troops: Artillery Organizations. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/22220289
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/22220289>.
Note: These citations are programmatically generated and may be incomplete.