Books about Western stories (sorted alphabetically)
- Other Main-Travelled Roads Hamlin Garland
- Outdoor Girls in the Saddle; Or, The Girl Miner of Gold Run Laura Lee Hope
- outlaw's pledge; or, The raid on the old stockade Spencer Dair
- Outlet Andy Adams
- Out of the blue Bertrand W. Sinclair
- Out of the Depths: A Romance of Reclamation Robert Ames Bennet
- Overland Red: A Romance of the Moonstone Cañon Trail Henry Herbert Knibbs
- Overland Tales Josephine Clifford
- Over the Border: A Novel Herman Whitaker
- Over the Pass Frederick Palmer
- Paid off Walt Coburn
- Paradise Bend William Patterson White
- Pardners Rex Beach
- Parowan Bonanza B. M. Bower
- Partners of Chance Henry Herbert Knibbs
- pelsjagers van de Arkansas: Tafereelen uit de wouden en prairien van Amerika (Dutch) Gustave Aimard
- Penny of Top Hill Trail Belle Kanaris Maniates
- Phantom Herd B. M. Bower
- phantom hunter; or, love after death Edward Sylvester Ellis
- Phantom Town Mystery Carol Norton
- Philip Steele of the Royal Northwest Mounted Police James Oliver Curwood
- Pike's Peak Rush; Or, Terry in the New Gold Fields Edwin L. Sabin
- pioneer : A tale of two states Geraldine Bonner
- Pirates of the Prairies: Adventures in the American Desert Gustave Aimard
- Playing Safe in Piperock W. C. Tuttle