Soviet Union

Soviet Armed Forces Manpower Statistics – 1 October 1924

United States of America

Navy Department

Armament for Naval Aircraft (USA, 1934)

War Plans

US Color Coded War Plans (1904-1939)
Mexican War Plan (USA, 1919) (1.4 MB)
Naval Mission, War Plan White (USA, 1920) (443 KB)
Emergency Plan White (USA, 1923) (25 MB)
War Plan Violet (USA, 1925~) (910 KB)
War Plan Green No. 2 (USA, 1927) (1.6 MB)
War Plan Tan (USA, 1929~) (2.5 MB)

Treaties of the Interwar Period

Washington Naval Treaty (Multiple, 1923) (2.69 MB)
First London Naval Treaty (Multiple, 1930) (3.14 MB)
Anglo-German Naval Agreement (1935)
Second London Naval Treaty (Multiple, 1936) (2.80 MB)

Newspapers of the Period

Mr. Churchill on his Escape from a Taxi-Cab (1931)