- OxfordAuthor: F. D. (Frederick Douglas) How, E. W. HaslehustReleased on Project Gutenberg: February 8, 2008
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- Ozma of Oz: A Record of Her Adventures with Dorothy Gale of Kansas, the Yellow Hen, the Scarecrow, the Tin Woodman, Tiktok, the Cowardly Lion, and the Hungry Tiger; Besides Other Good People too Numerous to Mention Faithfully Recorded HereinAuthor: L. Frank (Lyman Frank) BaumReleased on Project Gutenberg: April 1, 1996
- P'laski's Tunament: 1891Author: Thomas Nelson PageReleased on Project Gutenberg: October 12, 2007
- P.'s Correspondence (From "Mosses from an Old Manse")Author: Nathaniel HawthorneReleased on Project Gutenberg: November 1, 2005
- Paddy FinnAuthor: William Henry Giles Kingston, Archibald WebbReleased on Project Gutenberg: May 15, 2007
- Padre Ignacio; Or, The Song of TemptationAuthor: Owen WisterReleased on Project Gutenberg: July 1, 1998
- Pagan and Christian Creeds: Their Origin and MeaningAuthor: Edward CarpenterReleased on Project Gutenberg: December 1, 1998
- Pagan and Christian RomeAuthor: Rodolfo Amedeo LancianiReleased on Project Gutenberg: July 26, 2007
- Pagan PapersAuthor: Kenneth GrahameReleased on Project Gutenberg: March 1, 2004
- Pagan PassionsAuthor: Randall Garrett, Laurence M. Janifer, Robert StanleyReleased on Project Gutenberg: September 26, 2007
- Pages for Laughing EyesAuthor: UnknownReleased on Project Gutenberg: December 4, 2006
- Pages from a Journal with Other PapersAuthor: William Hale WhiteReleased on Project Gutenberg: December 1, 2004
- Pages from an Old Volume of Life; A Collection of Essays, 1857-1881Author: Oliver Wendell HolmesReleased on Project Gutenberg: September 28, 2004
- Painted WindowsAuthor: Elia Wilkinson PeattieReleased on Project Gutenberg: September 1, 1999
- Painted Windows: Studies in Religious PersonalityAuthor: Harold Begbie, Kirsopp Lake, Emile VerpilleuxReleased on Project Gutenberg: February 9, 2005
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- Palestine, or, the Holy Land: From the Earliest Period to the Present TimeAuthor: Michael RussellReleased on Project Gutenberg: September 1, 2005
- Palmistry for AllAuthor: CheiroReleased on Project Gutenberg: January 29, 2007
- Pamela Giraud: A Play in Five ActsAuthor: Honoré de BalzacReleased on Project Gutenberg: May 1, 2005
- Pamela, or Virtue RewardedAuthor: Samuel RichardsonReleased on Project Gutenberg: July 1, 2004
- Pamela, Volume IIAuthor: Samuel RichardsonReleased on Project Gutenberg: July 20, 2004
- PanAuthor: Knut Hamsun, Edwin Björkman, W. J. Alexander (William John Alexander) WorsterReleased on Project Gutenberg: January 1, 2005
- PandoraAuthor: Henry JamesReleased on Project Gutenberg: August 1, 2000
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- Parables of a ProvinceAuthor: Gilbert ParkerReleased on Project Gutenberg: November 18, 2004
- Parables of the Christ-lifeAuthor: I. Lilias (Isabella Lilias) TrotterReleased on Project Gutenberg: August 29, 2007
- Parables of the CrossAuthor: I. Lilias (Isabella Lilias) TrotterReleased on Project Gutenberg: August 1, 2007
- Paradise Garden: The Satirical Narrative of a Great ExperimentAuthor: George GibbsReleased on Project Gutenberg: April 6, 2005
- Paradise LostAuthor: John MiltonReleased on Project Gutenberg: October 1, 1991
- Paradise LostAuthor: John MiltonReleased on Project Gutenberg: February 1, 1992
- Paradise RegainedAuthor: John MiltonReleased on Project Gutenberg: March 1, 1993
- Paradoxes of CatholicismAuthor: Robert Hugh BensonReleased on Project Gutenberg: July 16, 2005
- PardnersAuthor: Rex BeachReleased on Project Gutenberg: August 8, 2004
- Parent and Child Volume III., Child Study and TrainingAuthor: Hall, MosiahReleased on Project Gutenberg: February 1, 2004
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- Paris TalksAuthor: ʻAbdu'l-BaháReleased on Project Gutenberg: September 18, 2006
- Paris under the Commune: The Seventy-Three Days of the Second Siege; with Numerous Illustrations, Sketches Taken on the Spot, and Portraits (from the Original Photographs)Author: John LeightonReleased on Project Gutenberg: January 1, 2004
- Paris War Days: Diary of an AmericanAuthor: Charles Inman BarnardReleased on Project Gutenberg: February 1, 2006
- Paris: With Pen and Pencil: Its People and Literature, Its Life and BusinessAuthor: D. W. (David W.) BartlettReleased on Project Gutenberg: October 25, 2005
- Parish PapersAuthor: Norman MacleodReleased on Project Gutenberg: June 1, 2004
- Parisian Points of ViewAuthor: Ludovic Halévy, Brander Matthews, Matthews, Edith Virginia Brander [Translator]Released on Project Gutenberg: March 25, 2005
- Parisians in the CountryAuthor: Honoré de Balzac, Waring, James [Translator], Katharine Prescott WormeleyReleased on Project Gutenberg: April 1, 2005
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- Parkhurst Boys, and Other Stories of School LifeAuthor: Talbot Baines ReedReleased on Project Gutenberg: April 18, 2007
- Parks for the People: Proceedings of a Public Meeting held at Faneuil Hall, June 7, 1876Author: VariousReleased on Project Gutenberg: July 17, 2008
- ParmenidesAuthor: Plato, Benjamin JowettReleased on Project Gutenberg: March 1, 1999
- Parnassus on WheelsAuthor: Christopher MorleyReleased on Project Gutenberg: March 1, 2004
- Parochial and Plain Sermons, Vol. VII (of 8)Author: John Henry NewmanReleased on Project Gutenberg: January 11, 2008
- Parochial and Plain Sermons, Vol. VIII (of 8)Author: John Henry NewmanReleased on Project Gutenberg: January 14, 2008
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- Parrot & Co.Author: Harold MacGrath, J. André CastaigneReleased on Project Gutenberg: May 24, 2006
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- Parsifal: Story and Analysis of Wagner's Great OperaAuthor: H. R. (Hugh Reginald) HaweisReleased on Project Gutenberg: January 4, 2007
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- Pascal's PenséesAuthor: Blaise Pascal, T. S. (Thomas Stearns) EliotReleased on Project Gutenberg: April 27, 2006
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- Passages from the American Notebooks, Volume 1Author: Nathaniel HawthorneReleased on Project Gutenberg: May 1, 2005
- Passages from the American Notebooks, Volume 2.Author: Nathaniel HawthorneReleased on Project Gutenberg: May 1, 2005