- World War, 1914-1918 + Finance
- World War, 1914-1918 + German Americans
- World War, 1914-1918 + Blockades
- World War, 1914-1918 + Aerial operations, German
- World War, 1914-1918 + Participation, Australian
- World War, 1914-1918 + Food supply
- World War, 1914-1918 + Medical care
- World War, 1914-1918 + Religious aspects
- World War, 1914-1918 + Protest movements
- World War, 1914-1918 + Psychological aspects
- World War, 1914-1918 + Conscript labor
- World War, 1914-1918 + Personal narratives, British + History and criticism
- World War, 1914-1918 + Concentration camps
- World War, 1914-1918 + Language
- World War, 1914-1918 + Cryptography
- World War, 1914-1918 + Personal narratives, British
- World War, 1914-1918 + Peace
- World War, 1914-1918 + Aerial operations, British
- World War, 1914-1918 + Propaganda
- World War, 1914-1918 + Participation, Indian
- World War, 1914-1918 + Religious aspects + Christianity
- World War, 1914-1918 + Journalism, Military
- World War, 1914-1918 + Science
- World War, 1914-1918 + Economic aspects
- World War, 1914-1918 + Secret service
- World War, 1914-1918 + Law and legislation
- World War, 1914-1918 + Technology
- World War, 1914-1918 + Territorial questions
- World War, 1914-1918 + Prisoners and prisons, Austrian
- World War, 1914-1918 + Historiography
- World War, 1914-1918 + Transportation
- World War, 1914-1918 + Recruitment, enlistment, etc
- World War, 1914-1918 + Naval operations + Submarine
- World War, 1914-1918 + Naval operations, British
- World War, 1914-1918 + East Indians
- World War, 1914-1918 + Journalists
- World War, 1914-1918 + Peace + Sources
- World War, 1914-1918 + Photography
- World War, 1914-1918 + Naval operations, German
- World War, 1914-1918 + Religious aspects + Catholic Church
- World War, 1914-1918 + Peace + History
- World War, 1914-1918 + Personal narratives, British
- World War, 1914-1918 + Antiquities
- World War, 1914-1918 + Destruction and pillage
- World War, 1914-1918 + Causes + Sources