Balloons - Equipment - U.S. Balloon School, Engineering Department, Omaha, Nebraska. No caption. (Relief valve)

Chicago citation style
War Department. 1789-9/18/1947. Balloons - Equipment - U.S. Balloon School, Engineering Department, Omaha, Nebraska. No caption. (Relief valve). 1917-01-01/1918-12-31. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/20807680. (Accessed July 17, 2018.)
APA citation style
War Department. 1789-9/18/1947, (1917-01-01/1918-12-31) Balloons - Equipment - U.S. Balloon School, Engineering Department, Omaha, Nebraska. No caption. (Relief valve). Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/20807680
MLA citation style
War Department. 1789-9/18/1947. Retrieved from the Digital Public Library of America <http://catalog.archives.gov/id/20807680>.
Note: These citations are programmatically generated and may be incomplete.