L to R: Lt. George Elsey, Captain James Vardaman, and ship's clerk Edwin L. Hoying stand on the deck of the U. S. S. Augusta, the ship that is carrying President Harry S. Truman back to the United States after attending the Potsdam Conference in Germany. Lt. Elsey and Mr. Hoying are members of the map room staff.

Chicago citation style
National Archives and Records Administration. Office of Presidential Libraries. Harry S. Truman Library. 4/1/1985-. L to R: Lt. George Elsey, Captain James Vardaman, and ship's clerk Edwin L. Hoying stand on the deck of the U. S. S. Augusta, the ship that is carrying President Harry S. Truman back to the United States after attending the Potsdam Conference in Germany. Lt. Elsey and Mr. Hoying are members of the map room staff.. 1945-08-07. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/198728. (Accessed June 23, 2018.)
APA citation style
National Archives and Records Administration. Office of Presidential Libraries. Harry S. Truman Library. 4/1/1985-, (1945-08-07) L to R: Lt. George Elsey, Captain James Vardaman, and ship's clerk Edwin L. Hoying stand on the deck of the U. S. S. Augusta, the ship that is carrying President Harry S. Truman back to the United States after attending the Potsdam Conference in Germany. Lt. Elsey and Mr. Hoying are members of the map room staff.. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/198728
MLA citation style
National Archives and Records Administration. Office of Presidential Libraries. Harry S. Truman Library. 4/1/1985-. Retrieved from the Digital Public Library of America <http://catalog.archives.gov/id/198728>.
Note: These citations are programmatically generated and may be incomplete.