Gray, Napoleon B - Age 19, Year: 1864 - 3d US Colored Heavy Artillery

Chicago citation style
War Department. The Adjutant General's Office. 3/4/1907-9/18/1947. Gray, Napoleon B - Age 19, Year: 1864 - 3d US Colored Heavy Artillery. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/38288903. (Accessed August 19, 2018.)
APA citation style
War Department. The Adjutant General's Office. 3/4/1907-9/18/1947, Gray, Napoleon B - Age 19, Year: 1864 - 3d US Colored Heavy Artillery. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/38288903
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/38288903>.
Note: These citations are programmatically generated and may be incomplete.