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- Prose Fancies (Second Series)Author: Richard Le GallienneReleased on Project Gutenberg: November 20, 2004
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- Proserpina, Volume 2: Studies of Wayside Flowers, While the Air was Yet Pure Among the Alps and in the Scotland and England Which My Father KnewAuthor: John RuskinReleased on Project Gutenberg: February 17, 2005
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- ProtagorasAuthor: Plato, Benjamin JowettReleased on Project Gutenberg: January 1, 1999
- Proud and Lazy: A Story for Little FolksAuthor: Oliver OpticReleased on Project Gutenberg: January 24, 2008
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- Prudence Says SoAuthor: Ethel HuestonReleased on Project Gutenberg: May 28, 2007
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- Psmith, JournalistAuthor: P. G. (Pelham Grenville) WodehouseReleased on Project Gutenberg: April 1, 2001
- PsycheAuthor: Molière, Wall, Charles Heron [Translator]Released on Project Gutenberg: February 1, 2005
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- Psychology and Industrial EfficiencyAuthor: Hugo MünsterbergReleased on Project Gutenberg: February 23, 2005
- Psychology and Social SanityAuthor: Hugo MünsterbergReleased on Project Gutenberg: April 6, 2008
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- Public opinionAuthor: Walter LippmannReleased on Project Gutenberg: September 1, 2004
- Public School Domestic ScienceAuthor: Adelaide HoodlessReleased on Project Gutenberg: April 1, 2006
- Public SpeakingAuthor: Clarence StrattonReleased on Project Gutenberg: December 16, 2005
- Public Speaking: Principles and PracticeAuthor: Irvah Lester WinterReleased on Project Gutenberg: August 1, 2004
- Publications of the Astronomical Society of the Pacific, Volume 1Author: Astronomical Society of the PacificReleased on Project Gutenberg: July 29, 2008
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- Puck of Pook's HillAuthor: Rudyard Kipling, Arthur RackhamReleased on Project Gutenberg: July 11, 2008
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- Punch, or the London Charivari, June 10, 1914Author: Various, Owen SeamanReleased on Project Gutenberg: January 24, 2008
- Punch, or the London Charivari, May 13, 1914Author: Various, Owen SeamanReleased on Project Gutenberg: January 15, 2008
- Punch, or the London Charivari, May 27, 1914Author: Various, Owen SeamanReleased on Project Gutenberg: January 4, 2008
- Punch, or the London Charivari, May 6, 1914Author: Various, Owen SeamanReleased on Project Gutenberg: January 7, 2008
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- Punch, or the London Charivari, Vol. 104, April 15, 1893Author: Various, F. C. (Francis Cowley) BurnandReleased on Project Gutenberg: November 24, 2007
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- Punch, or the London Charivari, Vol. 104, February 11, 1893Author: Various, F. C. (Francis Cowley) BurnandReleased on Project Gutenberg: June 12, 2007
- Punch, or the London Charivari, Vol. 104, February 18, 1893Author: Various, F. C. (Francis Cowley) BurnandReleased on Project Gutenberg: July 24, 2007
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- Punch, or the London Charivari, Vol. 104, March 18, 1893Author: Various, F. C. (Francis Cowley) BurnandReleased on Project Gutenberg: September 17, 2007