Books about American fiction -- 20th century (sorted alphabetically)
- Open Window: Tales of the Months Mabel Osgood Wright
- Over the border Morgan Robertson
- Painted Veils James Huneker
- Peter Whiffle : His life and works Carl Van Vechten
- Poor, Dear Margaret Kirby Kathleen Thompson Norris
- Portland, Oregon, A.D. 1999, and other sketches J. W. Hayes
- Possession : a novel Louis Bromfield
- Praying Skipper, and Other Stories Ralph Delahaye Paine
- Public Square Will Levington Comfort
- Ramsey Milholland Booth Tarkington
- Raw Material Dorothy Canfield Fisher
- Restless Sex Robert W. Chambers
- Revolt of the Oyster Don Marquis
- Running Free James B. Connolly
- Scientific Sprague Francis Lynde
- Short stories from Life: The 81 prize stories in "Life's" Shortest Story Contest
- Simeon Tetlow's Shadow Jennette Lee
- Sixes and Sevens O. Henry
- Sleuth of St. James's Square Melville Davisson Post
- Spawn of the Desert W. C. Tuttle
- Special Detective (Ashton-Kirk) John T. McIntyre
- Spinners' Book of Fiction Spinners' Club
- spokesman's secretary : Being the letters of Mame to Mom Upton Sinclair
- Strife of the Sea T. Jenkins Hains
- Tales of Men and Ghosts Edith Wharton