This is the Japanese aircraft carrier HIJMS Ryujo (Prancing Dragon) that was commissioned on May 9, 1933. This photo was obviously taken during the early to mid 1930s
U.S. Army Air Corps (USAAC) Ford (Model 4-AT-E) C-9, msn 4-AT-84, USAAC serial number 29-224, in January 1930. The USAAC ordered seven C-3As which were delivered in 1929. They were all re-engined and redesignated C-9s. This aircraft was used as a hack by the 90th Attack Squadron, 3d Attack Group, based at Ft. Crockett, Galveston, Texas.
U.S. Army Air Corps (USAAC) Ford (Model 5-AT-D) TriMotor, msn 5-AT-92, USAAC serial number 31-402, one of four C-4As purchased by the USAAC as VIP aircraft. This aircraft, named “Oklahoma,” was built in January 1931 and is assigned to the Air Corps Bolling Field Detachment at Bolling Field, Washington, D.C. The flag of the Assistant Secretary of War for Air is mounted on the rear of the fuselage aft of the windows.
National Guard Douglas O-2H observation aircraft, msn 599, U.S. Army Air Corps (USAAC) serial number 29-399. A total of 140 O-2Hs were built, 90 going to the USAAC and 50 to the National Guard. This aircraft is assigned to the 119th Observation Squadron, New Jersey National Guard based at Newark Airport, Newark, New Jersey. The 119th operated these aircraft to provide aerial observation to the 44th Division, New Jersey National Guard ca. 1930-1932.
U.S. Army Air Corps (USAAC) Loening OA-1A. This aircraft, named "San Antonio," was one of the five OA-1As that took off from San Antonio, Texas, U.S., on December 21, 1926, and flew 22,000 miles (35 406 kilometers) on a Good Will tour of 25 Central and South American countries. They returned to the U.S. on May 2, 1927. The other aircraft were named "Detroit," "New York," "San Francisco" and "St. Louis."
"San Francisco" still exists and is owned by the Smitsonian Institute's National Air and Space Museum in Washington, D.C., but is on loan to and on display at the National Museum of the United States Air Force at Wright-Patterson Air Force Base, Dayton, Ohio, U.S.