- The Outline of Science, Vol. 1 (of 4): A Plain Story Simply ToldAuthor: J. Arthur (John Arthur) ThomsonReleased on Project Gutenberg: January 22, 2007
- The Oxford Movement; Twelve Years, 1833-1845Author: R. W. (Richard William) ChurchReleased on Project Gutenberg: April 1, 2004
- The Pacha of Many TalesAuthor: Frederick MarryatReleased on Project Gutenberg: October 7, 2004
- The Pacha of Many TalesAuthor: Frederick MarryatReleased on Project Gutenberg: May 22, 2007
- The Pagan Tribes of Borneo: A Description of Their Physical Moral and Intellectual Condition, with Some Discussion of Their Ethnic RelationsAuthor: Charles Hose, William McDougall, Alfred C. (Alfred Cort) HaddonReleased on Project Gutenberg: July 1, 2002
- The PagansAuthor: Arlo BatesReleased on Project Gutenberg: August 1, 2005
- The Pageant of SummerAuthor: Richard JefferiesReleased on Project Gutenberg: January 1, 1996
- The Palace Beautiful: A Story for GirlsAuthor: L. T. MeadeReleased on Project Gutenberg: February 22, 2005
- The Palace of Darkened WindowsAuthor: Mary Hastings Bradley, Edmund FrederickReleased on Project Gutenberg: June 13, 2005
- The Palace of Pleasure, Volume 1Author: Painter, William, Joseph Haslewood, Joseph JacobsReleased on Project Gutenberg: January 1, 2007
- The Palmy Days of Nance OldfieldAuthor: Edward RobinsReleased on Project Gutenberg: March 1, 2004
- The Panama Canal Conflict between Great Britain and the United States of America: A StudyAuthor: L. (Lassa) OppenheimReleased on Project Gutenberg: July 25, 2007
- The Panjab, North-West Frontier Province, and KashmirAuthor: Douie, James McCrone, SirReleased on Project Gutenberg: February 10, 2008
- The Papers and Writings of Abraham Lincoln — Volume 1: 1832-1843Author: Abraham Lincoln, Joseph Hodges Choate, Theodore Roosevelt, Carl Schurz, Lapsley, Arthur Brooks [Editor]Released on Project Gutenberg: September 30, 2004
- The Papers and Writings of Abraham Lincoln — Volume 2: 1843-1858Author: Abraham Lincoln, Lapsley, Arthur Brooks [Editor]Released on Project Gutenberg: September 30, 2004
- The Papers and Writings of Abraham Lincoln — Volume 3: The Lincoln-Douglas DebatesAuthor: Abraham Lincoln, Lapsley, Arthur Brooks [Editor]Released on Project Gutenberg: September 30, 2004
- The Papers and Writings of Abraham Lincoln — Volume 4: The Lincoln-Douglas DebatesAuthor: Abraham Lincoln, Lapsley, Arthur Brooks [Editor]Released on Project Gutenberg: September 30, 2004
- The Papers and Writings of Abraham Lincoln — Volume 5: 1858-1862Author: Abraham Lincoln, Lapsley, Arthur Brooks [Editor]Released on Project Gutenberg: September 30, 2004
- The Papers and Writings of Abraham Lincoln — Volume 6: 1862-1863Author: Abraham Lincoln, Lapsley, Arthur Brooks [Editor]Released on Project Gutenberg: September 30, 2004
- The Papers and Writings of Abraham Lincoln — Volume 7: 1863-1865Author: Abraham Lincoln, Lapsley, Arthur Brooks [Editor]Released on Project Gutenberg: September 30, 2004
- The Papers and Writings of Abraham Lincoln, CompleteAuthor: Abraham Lincoln, Joseph Hodges Choate, Theodore Roosevelt, Carl Schurz, Lapsley, Arthur Brooks [Editor]Released on Project Gutenberg: October 1, 2004
- The Parables of Our LordAuthor: William ArnotReleased on Project Gutenberg: May 5, 2007
- The Parables of the Saviour: The Good Child's Library, Tenth BookAuthor: AnonymousReleased on Project Gutenberg: February 1, 2004
- The Paradise MysteryAuthor: J. S. (Joseph Smith) FletcherReleased on Project Gutenberg: March 1, 2004
- The Paradise of Children: (From: "A Wonder-Book for Girls and Boys")Author: Nathaniel HawthorneReleased on Project Gutenberg: November 1, 2005
- The Parasite: A StoryAuthor: Arthur Conan DoyleReleased on Project Gutenberg: November 1, 1995
- The Parent's Assistant; Or, Stories for ChildrenAuthor: Maria Edgeworth, Francis Arthur FraserReleased on Project Gutenberg: January 1, 2003
- The Parenticide ClubAuthor: Ambrose BierceReleased on Project Gutenberg: February 1, 2003
- The Paris Sketch Book of Mr. M. A. TitmarshAuthor: William Makepeace ThackerayReleased on Project Gutenberg: August 1, 2001
- The Parish ClerkAuthor: P. H. (Peter Hampson) DitchfieldReleased on Project Gutenberg: September 3, 2004
- The Parish RegisterAuthor: George CrabbeReleased on Project Gutenberg: March 1, 2004
- The Parisians — CompleteAuthor: Lytton, Edward Bulwer Lytton, BaronReleased on Project Gutenberg: November 27, 2004
- The Parisians — Volume 01Author: Lytton, Edward Bulwer Lytton, BaronReleased on Project Gutenberg: March 1, 2005
- The Parisians — Volume 02Author: Lytton, Edward Bulwer Lytton, BaronReleased on Project Gutenberg: March 1, 2005
- The Parisians — Volume 03Author: Lytton, Edward Bulwer Lytton, BaronReleased on Project Gutenberg: March 1, 2005
- The Parisians — Volume 04Author: Lytton, Edward Bulwer Lytton, BaronReleased on Project Gutenberg: March 1, 2005
- The Parisians — Volume 05Author: Lytton, Edward Bulwer Lytton, BaronReleased on Project Gutenberg: March 1, 2005
- The Parisians — Volume 06Author: Lytton, Edward Bulwer Lytton, BaronReleased on Project Gutenberg: March 1, 2005
- The Parisians — Volume 07Author: Lytton, Edward Bulwer Lytton, BaronReleased on Project Gutenberg: March 1, 2005
- The Parisians — Volume 08Author: Lytton, Edward Bulwer Lytton, BaronReleased on Project Gutenberg: March 1, 2005
- The Parisians — Volume 09Author: Lytton, Edward Bulwer Lytton, BaronReleased on Project Gutenberg: March 1, 2005
- The Parisians — Volume 10Author: Lytton, Edward Bulwer Lytton, BaronReleased on Project Gutenberg: March 1, 2005
- The Parisians — Volume 11Author: Lytton, Edward Bulwer Lytton, BaronReleased on Project Gutenberg: March 1, 2005
- The Parisians — Volume 12Author: Lytton, Edward Bulwer Lytton, BaronReleased on Project Gutenberg: March 1, 2005
- The Parlor CarAuthor: William Dean HowellsReleased on Project Gutenberg: September 1, 2002
- The Parson's Daughter of Oxney ColneAuthor: Anthony TrollopeReleased on Project Gutenberg: February 1, 2003
- The Part Borne by the Dutch in the Discovery of Australia 1606-1765Author: J. E. (Jan Ernst) HeeresReleased on Project Gutenberg: January 3, 2006
- The Parthenon By Way Of PapendrechtAuthor: Francis Hopkinson SmithReleased on Project Gutenberg: December 3, 2007
- The Parts Men PlayAuthor: Beverley BaxterReleased on Project Gutenberg: January 9, 2006
- The Party and Other StoriesAuthor: Anton Pavlovich Chekhov, Constance GarnettReleased on Project Gutenberg: September 9, 2004
- The Passaic Flood of 1903Author: Marshall Ora LeightonReleased on Project Gutenberg: November 20, 2006
- The Passenger from CalaisAuthor: Arthur GriffithsReleased on Project Gutenberg: July 21, 2005
- The Passing of New France : a Chronicle of MontcalmAuthor: William Wood, H. H. (Hugh Hornby) Langton, George McKinnon WrongReleased on Project Gutenberg: November 1, 2004
- The Passing of the Frontier: A Chronicle of the Old WestAuthor: Emerson HoughReleased on Project Gutenberg: January 1, 2002
- The Passionate PilgrimAuthor: William ShakespeareReleased on Project Gutenberg: November 1, 1998
- The Past Condition of Organic Nature: Lecture II. (of VI.), "Lectures to Working Men", at the Museum of Practical Geology, 1863, on Darwin's Work: "Origin of Species"Author: Thomas Henry HuxleyReleased on Project Gutenberg: November 1, 2001
- The Pastor's SonAuthor: William W. WalterReleased on Project Gutenberg: August 1, 2004
- The PatagoniaAuthor: Henry JamesReleased on Project Gutenberg: December 1, 2000
- The Patchwork Girl of OzAuthor: L. Frank (Lyman Frank) BaumReleased on Project Gutenberg: June 1, 1997
- The Paternoster RubyAuthor: Charles Edmonds Walk, McFall, J. V. [Illustrator]Released on Project Gutenberg: August 1, 2007