- World War, 1914-1918 + Press coverage
- World War, 1914-1918 + Civilian relief
- World War, 1914-1918 + Naval operations
- World War, 1914-1918 + Motion pictures and the war
- World War, 1914-1918 + Search and rescue operations
- World War, 1914-1918 + Trench warfare
- World War, 1914-1918 + Armistices
- World War, 1914-1918 + Chemical warfare
- World War, 1914-1918 + Literature and the war
- World War, 1914-1918 + Refugees
- World War, 1914-1918 + Conscientious objectors
- World War, 1914-1918 + War work
- World War, 1914-1918 + Naval operations, British
- World War, 1914-1918 + Diplomatic history
- World War, 1914-1918 + Cryptography
- World War, 1914-1918 + Naval operations, German
- World War, 1914-1918 + Economic aspects
- World War, 1914-1918 + Missing in action
- World War, 1914-1918 + Secret service
- World War, 1914-1918 + Science
- World War, 1914-1918 + Underground movements
- World War, 1914-1918 + Camouflage
- World War, 1914-1918 + Aerial operations
- World War, 1914-1918 + Aerial operations, American
- World War, 1914-1918 + Moral and ethical aspects
- World War, 1914-1918 + Participation, Mexican American
- World War, 1914-1918 + Regimental histories
- World War, 1914-1918 + Equipment and supplies
- World War, 1914-1918 + Prisoners and prisons, German
- World War, 1914-1918 + Prisoners and prisons
- World War, 1914-1918 + Communications
- World War, 1914-1918 + Naval operations + Submarine
- World War, 1914-1918 + Aerial operations, French
- World War, 1914-1918 + Art and the war
- World War, 1914-1918 + Women
- World War, 1914-1918 + Naval operations, American
- World War, 1914-1918 + Military intelligence
- World War, 1914-1918 + Aerial operations, British
- World War, 1914-1918 + Protest movements
- World War, 1914-1918 + Participation, East Indian
- World War, 1914-1918 + Nurses
- World War, 1914-1918 + Public opinion
- World War, 1914-1918 + Libraries
- World War, 1914-1918 + Photography
- World War, 1914-1918 + Propaganda