O'Brien, J - Age [Blank], Year: [Blank] - Seventh Infantry, Mu - Re - Louisiana

Chicago citation style
War Department. The Adjutant General's Office. 3/4/1907-9/18/1947. O'Brien, J - Age [Blank], Year: [Blank] - Seventh Infantry, Mu - Re - Louisiana. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/21312182. (Accessed August 14, 2018.)
APA citation style
War Department. The Adjutant General's Office. 3/4/1907-9/18/1947, O'Brien, J - Age [Blank], Year: [Blank] - Seventh Infantry, Mu - Re - Louisiana. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/21312182
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/21312182>.
Note: These citations are programmatically generated and may be incomplete.