Books in World War I (sorted alphabetically)
- What Peace Means Henry Van Dyke
- White Road to Verdun Kathleen Burke
- Why we are at war : messages to the Congress, January to April 1917 Woodrow Wilson
- Why We Are at War (2nd Edition, revised) University of Oxford. Faculty of Modern History
- Willing Horse: A Novel Ian Hay
- Wilmshurst of the Frontier Force Percy F. Westerman
- Winning a Cause: World War Stories John G. Thompson and Inez Bigwood
- With a Highland Regiment in Mesopotamia Anonymous
- With Beatty off Jutland: A Romance of the Great Sea Fight Percy F. Westerman
- With British Guns in Italy: A Tribute to Italian Achievement Baron Hugh Dalton Dalton
- With Haig on the Somme D. H. Parry
- With Joffre at Verdun: A Story of the Western Front F. S. Brereton
- With our army in Palestine Antony Bluett
- With Our Soldiers in France Sherwood Eddy
- With the Allies Richard Harding Davis
- With the British Army in The Holy Land H. O. Lock
- With the "Die-Hards" in Siberia John Ward
- With the Doughboy in France: A Few Chapters of an American Effort Edward Hungerford
- With the French Flying Corps Carroll Dana Winslow
- With the Turks in Palestine Alexander Aaronsohn
- With Those Who Wait Frances Wilson Huard
- Women and War Work Helen Miller Moyes
- Woodrow Wilson and the World War Charles Seymour
- World in Chains: Some Aspects of War and Trade John Mavrogordato
- World's War Events Volume 3