Books in Bestsellers, American, 1895-1923 (sorted alphabetically)
- Outwitting the Hun: My Escape from a German Prison Camp Pat O'Brien
- Over Here Edgar A. Guest
- Over the Top," by an American Soldier Who Went Arthur Guy Empey
- Painted Windows: Studies in Religious Personality Harold Begbie
- Pawns Count E. Phillips Oppenheim
- Peace Negotiations: A Personal Narrative Robert Lansing
- Penelope's Progress Kate Douglas Smith Wiggin
- Penrod Booth Tarkington
- Penrod Booth Tarkington
- Peter: A Novel of Which He is Not the Hero Francis Hopkinson Smith
- Phroso: A Romance Anthony Hope
- pit : a story of Chicago Frank Norris
- Plattsburg Manual: A Handbook for Military Training O. O. Ellis and E. B. Garey
- Poems Alan Seeger
- Pollyanna Eleanor H. Porter
- Pollyanna Eleanor H. Porter
- Pollyanna Grows Up Eleanor H. Porter
- Poor Wise Man Mary Roberts Rinehart
- Port of Missing Men Meredith Nicholson
- Portygee Joseph Crosby Lincoln
- Prince of Graustark George Barr McCutcheon
- Princess Aline Richard Harding Davis
- Princess Passes C. N. Williamson and A. M. Williamson
- prisoner of Zenda Anthony Hope
- prisoner of Zenda Anthony Hope