Books about World War, 1914-1918 (sorted alphabetically)
- New York Times Current History; The European War, Vol 2, No. 2, May, 1915 Various
- New York Times Current History; The European War, Vol 2, No. 3, June, 1915 Various
- New York Times Current History; The European War, Vol 2, No. 4, July, 1915 Various
- New York Times Current History; The European War, Vol 2, No. 5, August, 1915 Various
- New York Times Current History: The European War, Vol. 8, Pt. 2, No. 1, July 1918 Various
- Next of Kin: Those who Wait and Wonder Nellie L. McClung
- Now It Can Be Told Philip Gibbs
- Old Europe's Suicide; or, The Building of a Pyramid of Errors Baron Christopher Birdwood Thomson
- Oorlogsfilosofie (Dutch) Leo Polak
- Ordeal by Battle Frederick Scott Oliver
- PanGerman Plot Unmasked: Berlin's formidable peace-trap of "the drawn war" André Chéradame
- Pan-Germany : The disease and cure André Chéradame
- Pentecost of Calamity Owen Wister
- positie van Nederland (Dutch) Abraham Kuyper
- Précurseurs (French) Romain Rolland
- Quelques aspects du vertige mondial (French) Pierre Loti
- Reginald Bateman, Teacher and Soldier Reginald Bateman
- Religion and the War Yale University. Divinity School
- Right Above Race Otto H. Kahn
- School History of the Great War Albert E. McKinley, Charles Augustin Coulomb, and Armand Jacques Gerson
- scrap of paper : The inner history of German diplomacy and her scheme of world-wide conquest Emile Joseph Dillon
- Short History of the Great War A. F. Pollard
- Some War-time Lessons Frederick P. Keppel
- Speaking of Prussians--" Irvin S. Cobb
- Specimens of British Trench Orders Army War College