| Protagoras
Plato | |
| Protection and Communism
Frédéric Bastiat | |
| Protection from Fire and Thieves / Including the construction of locks, safes, strong-rooms, and fireproof buildings; burglary, and the means of preventing it; fire, its detection, prevention, and extinction; etc.
George Hayter Chubb | |
| Protestantism and Catholicity compared in their effects on the civilization of Europe
Jaime Luciano Balmes | |
| Proteus
Vernon Lee | |
| Proud and Lazy: A Story for Little Folks
Oliver Optic | |
| Proud Lady
Neith Boyce | |
| Proud Signild, and Other Ballads
Unknown | |
| Proverb Lore / Many sayings, wise or otherwise, on many subjects, gleaned from many sources
F. Edward Hulme | |
| Proverb Stories
Louisa May Alcott |
