- Shelled by an Unseen FoeAuthor: James FiskeReleased on Project Gutenberg: June 9, 2007
- ShelleyAuthor: Sydney WaterlowReleased on Project Gutenberg: June 1, 1998
- Shelley: An EssayAuthor: Francis ThompsonReleased on Project Gutenberg: June 1, 1998
- Shenac's Work at HomeAuthor: Margaret M. (Margaret Murray) RobertsonReleased on Project Gutenberg: April 27, 2007
- Shenandoah : A Military Comedy: Representative Plays by American Dramatists: 1856-1911Author: Bronson Howard, Montrose Jonas MosesReleased on Project Gutenberg: July 28, 2004
- Shepp's Photographs of the WorldAuthor: James W. Shepp, Daniel B. SheppReleased on Project Gutenberg: July 12, 2008
- Shifting Winds: A Tough YarnAuthor: R. M. (Robert Michael) BallantyneReleased on Project Gutenberg: June 6, 2007
- Shining FerryAuthor: Arthur Quiller-CouchReleased on Project Gutenberg: November 28, 2007
- Ship's Company, the Entire CollectionAuthor: W. W. (William Wymark) Jacobs, Will OwenReleased on Project Gutenberg: January 1, 2004
- Ship-BoredAuthor: Julian StreetReleased on Project Gutenberg: February 11, 2008
- Ships that pass in the nightAuthor: Beatrice HarradenReleased on Project Gutenberg: May 1, 2004
- Shock AbsorberAuthor: Von Wald, E. G., H. R. Van DongenReleased on Project Gutenberg: January 21, 2008
- Shock and Awe — Achieving Rapid DominanceAuthor: Harlan Ullman, James P. WadeReleased on Project Gutenberg: January 1, 2005
- Shop ManagementAuthor: Frederick Winslow TaylorReleased on Project Gutenberg: September 1, 2004
- Short CruisesAuthor: W. W. (William Wymark) Jacobs, Will OwenReleased on Project Gutenberg: September 1, 2004
- Short CruisesAuthor: W. W. (William Wymark) Jacobs, Will OwenReleased on Project Gutenberg: June 25, 2007
- Short History of the London Rifle BrigadeAuthor: UnknownReleased on Project Gutenberg: June 29, 2008
- Short Sketches from Oldest AmericaAuthor: John B. (John Beach) DriggsReleased on Project Gutenberg: January 21, 2008
- Short Stories and Essays (from Literature and Life)Author: William Dean HowellsReleased on Project Gutenberg: October 22, 2004
- Short stories and selections for use in the secondary schoolsAuthor: Emilie K. (Emilie Kip) BakerReleased on Project Gutenberg: January 1, 2005
- Short Stories for English CoursesAuthor: Rosa Mary Redding MikelsReleased on Project Gutenberg: April 1, 2004
- Short Stories of Various TypesAuthor: Freck, Laura F. [Editor]Released on Project Gutenberg: March 15, 2007
- Short Stories Old and NewAuthor: C. Alphonso (Charles Alphonso) SmithReleased on Project Gutenberg: December 1, 2003
- Short Story Classics (American) Vol. 2Author: William PattenReleased on Project Gutenberg: August 20, 2005
- Short story writingAuthor: Charles Raymond BarrettReleased on Project Gutenberg: February 6, 2007
- Short Studies on Great SubjectsAuthor: James Anthony FroudeReleased on Project Gutenberg: March 6, 2007
- Shorter Prose PiecesAuthor: Oscar WildeReleased on Project Gutenberg: February 1, 2000
- Shorty McCabeAuthor: Sewell Ford, F. Vaux (Francis Vaux) WilsonReleased on Project Gutenberg: August 5, 2007
- Shorty McCabe on the JobAuthor: Sewell FordReleased on Project Gutenberg: April 7, 2007
- Showell's Dictionary of Birmingham: A History and Guide, Arranged AlphabeticallyAuthor: Harman, Thomas T., Showell, WalterReleased on Project Gutenberg: December 26, 2004
- Si'Wren of the PatriarchsAuthor: Cheney, RolandReleased on Project Gutenberg: September 1, 2004
- SiddharthaAuthor: Hermann HesseReleased on Project Gutenberg: February 1, 2001
- Side LightsAuthor: James Runciman, W. T. (William Thomas) Stead, Grant Allen, John F. RuncimanReleased on Project Gutenberg: May 3, 2005
- Side Show StudiesAuthor: Metcalfe, Francis, Oliver HerfordReleased on Project Gutenberg: November 19, 2007
- Side-Lights on Astronomy and Kindred Fields of Popular ScienceAuthor: Simon NewcombReleased on Project Gutenberg: May 1, 2003
- Sidelights on RelativityAuthor: Albert EinsteinReleased on Project Gutenberg: January 1, 2005
- Sidney LanierAuthor: Edwin MimsReleased on Project Gutenberg: February 1, 1998
- Sidonia, the Sorceress : the Supposed Destroyer of the Whole Reigning Ducal House of Pomerania — Volume 1Author: Wilhelm MeinholdReleased on Project Gutenberg: October 1, 2004
- Sidonia, the Sorceress : the Supposed Destroyer of the Whole Reigning Ducal House of Pomerania — Volume 2Author: Wilhelm MeinholdReleased on Project Gutenberg: October 1, 2004
- Siege of Washington, D.C., written expressly for little peopleAuthor: F. Colburn (Francis Colburn) AdamsReleased on Project Gutenberg: November 1, 2003
- Sight to the BlindAuthor: Lucy S. FurmanReleased on Project Gutenberg: April 1, 2004
- Sight UnseenAuthor: Mary Roberts RinehartReleased on Project Gutenberg: November 1, 1999
- Sights from a Steeple (From "Twice Told Tales")Author: Nathaniel HawthorneReleased on Project Gutenberg: November 1, 2005
- Sign Language Among North American Indians Compared With That Among Other Peoples And Deaf-Mutes: First Annual Report of the Bureau of Ethnology to the Secretary of the Smithsonian Institution, 1879-1880, Government Printing Office, Washington, 1881, pages 263-552Author: Garrick MalleryReleased on Project Gutenberg: January 3, 2006
- Signora Fantastici (A Dramatic Proverb)Author: Madame de (Anne-Louise-Germaine) Staël, Morlock, Frank J. [Translator]Released on Project Gutenberg: November 1, 2003
- Signs of ChangeAuthor: William MorrisReleased on Project Gutenberg: February 1, 2002
- Silas MarnerAuthor: George EliotReleased on Project Gutenberg: June 1, 1996
- Silver LakeAuthor: R. M. (Robert Michael) BallantyneReleased on Project Gutenberg: June 6, 2007
- SilverpointsAuthor: John GrayReleased on Project Gutenberg: April 24, 2007
- Simon Called PeterAuthor: Robert KeableReleased on Project Gutenberg: January 3, 2005
- Simon DaleAuthor: Anthony HopeReleased on Project Gutenberg: January 10, 2007
- Simon Magus: An Essay on the Founder of Simonianism Based on the Ancient Sources With a Re-Evaluation of His Philosophy and TeachingsAuthor: G. R. S. (George Robert Stow) MeadReleased on Project Gutenberg: July 12, 2004
- Simon the JesterAuthor: William John LockeReleased on Project Gutenberg: April 13, 2006
- Simple Italian CookeryAuthor: Antonia IsolaReleased on Project Gutenberg: August 1, 2004
- Simple Simon: Silhouette SeriesAuthor: AnonymousReleased on Project Gutenberg: October 5, 2007
- Simón Bolívar (The Liberator): Patriot, Warrior, Statesman, Father of Five Nations, a Sketch of His Life and His WorkAuthor: Guillermo A. (Guillermo Antonio) SherwellReleased on Project Gutenberg: September 1, 2005
- Since CézanneAuthor: Clive BellReleased on Project Gutenberg: September 7, 2004
- Sinking of the Titanic and Great Sea DisastersAuthor: Logan MarshallReleased on Project Gutenberg: January 1, 1997
- Sinks of London Laid Open: A Pocket Companion for the Uninitiated, to Which is Added a Modern Flash Dictionary Containing all the Cant Words, Slang Terms, and Flash Phrases Now in Vogue, with a List of the Sixty Orders of Prime CovesAuthor: George CruikshankReleased on Project Gutenberg: November 2, 2007
- Sintram and His CompanionsAuthor: La Motte-Fouqué, Friedrich Heinrich Karl, Freiherr de, Charlotte M. (Charlotte Mary) Yonge, Gordon BrowneReleased on Project Gutenberg: September 1, 2001