- The Stowmarket Mystery; Or, A Legacy of HateAuthor: Louis TracyReleased on Project Gutenberg: February 1, 2005
- The Strand DistrictAuthor: Walter Besant, G. E. (Geraldine Edith) MittonReleased on Project Gutenberg: May 17, 2008
- The Strand Magazine, Vol. 05, Issue 28, April 1893: An Illustrated MonthlyAuthor: Various, George NewnesReleased on Project Gutenberg: March 11, 2007
- The Strand Magazine, Vol. 05, Issue 30, June 1893: An Illustrated MonthlyAuthor: Various, George NewnesReleased on Project Gutenberg: January 7, 2008
- The Strand Magazine: Vol. 07, Issue 37, January, 1894.: An Illustrated MonthlyAuthor: Various, George NewnesReleased on Project Gutenberg: November 1, 2003
- The Strange Adventure of James Shervinton: 1902Author: Louis BeckeReleased on Project Gutenberg: April 5, 2008
- The Strange Adventures of Eric BlackburnAuthor: Harry Collingwood, C. M. (Charles Murray) PaddayReleased on Project Gutenberg: April 13, 2007
- The Strange Cabin on Catamount IslandAuthor: Leslie, Lawrence J.Released on Project Gutenberg: December 1, 2004
- The Strange Case of CavendishAuthor: Randall ParrishReleased on Project Gutenberg: January 31, 2006
- The strange case of Dr. Jekyll and Mr. HydeAuthor: Robert Louis StevensonReleased on Project Gutenberg: October 1, 1992
- The strange case of Dr. Jekyll and Mr. HydeAuthor: Robert Louis StevensonReleased on Project Gutenberg: June 27, 2008
- The Strange Little Girl: A Story for ChildrenAuthor: V. M., Katherine Augusta Westcott TingleyReleased on Project Gutenberg: December 1, 2007
- The stranger in FranceAuthor: Carr, John, SirReleased on Project Gutenberg: January 6, 2007
- The Stranger: A Drama, in Five ActsAuthor: August von Kotzebue, Thompson, BenjaminReleased on Project Gutenberg: December 29, 2006
- The StrawAuthor: Eugene O'NeillReleased on Project Gutenberg: September 16, 2007
- The Street Called StraightAuthor: Basil King, Orson LowellReleased on Project Gutenberg: December 20, 2004
- The Street of Seven StarsAuthor: Mary Roberts RinehartReleased on Project Gutenberg: February 1, 1998
- The Street That Wasn't ThereAuthor: Clifford D. Simak, Carl JacobiReleased on Project Gutenberg: August 2, 2007
- The Strength of Gideon and Other StoriesAuthor: Paul Laurence Dunbar, E. W. (Edward Windsor) KembleReleased on Project Gutenberg: May 23, 2005
- The Strength of the StrongAuthor: Jack LondonReleased on Project Gutenberg: October 1, 1997
- The Strolling Saint; being the confessions of the high and mighty Agostino D'Anguissola, tyrant of Mondolfo and Lord of Carmina, in the state of PiacenzaAuthor: Rafael SabatiniReleased on Project Gutenberg: September 1, 2002
- The Strong ArmAuthor: Robert BarrReleased on Project Gutenberg: August 1, 2005
- The Student's Elements of GeologyAuthor: Lyell, Charles, SirReleased on Project Gutenberg: February 1, 2003
- The sturdy oakAuthor: Elizabeth Garver Jordan, Mary Austin, Marjorie Benton Cooke, Dorothy Canfield Fisher, Ethel Watts Mumford GrantReleased on Project Gutenberg: July 1, 2005
- The StuttererAuthor: Reuben (Reuben Robert) MerlissReleased on Project Gutenberg: September 5, 2007
- The Submarine Boys and the Middies: The Prize Detail at AnnapolisAuthor: Durham, Victor G.Released on Project Gutenberg: November 13, 2005
- The Submarine Boys and the Middies: Or, the Prize Detail at AnnapolisAuthor: Durham, Victor G.Released on Project Gutenberg: February 12, 2006
- The Submarine Boys and the Spies: Dodging the Sharks of the DeepAuthor: Durham, Victor G.Released on Project Gutenberg: November 13, 2005
- The Submarine Boys for the Flag: Deeding Their Lives to Uncle SamAuthor: Durham, Victor G.Released on Project Gutenberg: November 15, 2005
- The Submarine Boys on Duty: Life on a Diving Torpedo BoatAuthor: Durham, Victor G.Released on Project Gutenberg: November 12, 2005
- The Submarine Boys' Lightning Cruise: The Young Kings of the DeepAuthor: Durham, Victor G.Released on Project Gutenberg: November 13, 2005
- The Submarine Boys' Trial Trip: "Making Good" as Young ExpertsAuthor: Durham, Victor G.Released on Project Gutenberg: November 12, 2005
- The Substance of a DreamAuthor: F. W. (Francis William) BainReleased on Project Gutenberg: March 29, 2007
- The Substance of a Journal During a Residence at the Red River Colony, British North America: and Frequent Excursions Among the North-West American: Indians, In the Years 1820, 1821, 1822, 1823.Author: John WestReleased on Project Gutenberg: August 6, 2007
- The Substitute: Deep Waters, Part 9.Author: W. W. (William Wymark) Jacobs, Will OwenReleased on Project Gutenberg: March 1, 2004
- The Substitute PrisonerAuthor: Max MarcinReleased on Project Gutenberg: August 2, 2006
- The Subterranean BrotherhoodAuthor: Julian HawthorneReleased on Project Gutenberg: July 1, 2005
- The Suffering of Being KafkaAuthor: Samuel VakninReleased on Project Gutenberg: June 1, 2004
- The Sugar-Plumb: or, Golden FairingAuthor: Two-Shoes, MargeryReleased on Project Gutenberg: November 28, 2007
- The Suitors of Yvonne: being a portion of the memoirs of the Sieur Gaston de LuynesAuthor: Rafael SabatiniReleased on Project Gutenberg: September 1, 2002
- The summer holidaysAuthor: AmerelReleased on Project Gutenberg: April 22, 2005
- The SummonsAuthor: A. E. W. (Alfred Edward Woodley) MasonReleased on Project Gutenberg: July 28, 2005
- The Summons of the Lord of HostsAuthor: Bahá'u'lláhReleased on Project Gutenberg: October 28, 2005
- The Sun KingAuthor: Derreaux, GastonReleased on Project Gutenberg: April 1, 2008
- The Sun of Quebec: A Story of a Great CrisisAuthor: Joseph A. (Joseph Alexander) AltshelerReleased on Project Gutenberg: July 6, 2006
- The Sunbridge Girls at Six Star RanchAuthor: Eleanor H. (Eleanor Hodgman) PorterReleased on Project Gutenberg: May 23, 2008
- The Sundering FloodAuthor: William Morris, May MorrisReleased on Project Gutenberg: May 20, 2008
- The sunny sideAuthor: A. A. (Alan Alexander) MilneReleased on Project Gutenberg: September 12, 2004
- The Sunny Side of Diplomatic Life, 1875-1912Author: L. de (Lillie de) Hegermann-LindencroneReleased on Project Gutenberg: November 4, 2004
- The Sunny Side of Ireland: How to see it by the Great Southern and Western RailwayAuthor: John O'Mahony, R. Lloyd (Robert Lloyd) PraegerReleased on Project Gutenberg: September 19, 2006
- The Superstitions of WitchcraftAuthor: Howard WilliamsReleased on Project Gutenberg: October 1, 2007
- The Supplies for the Confederate Army,: how they were obtained in Europe and how paid for.Author: Caleb HuseReleased on Project Gutenberg: January 31, 2008
- The suppressed Gospels and Epistles of the original New Testament of Jesus the Christ, CompleteAuthor: William WakeReleased on Project Gutenberg: December 18, 2004
- The suppressed Gospels and Epistles of the original New Testament of Jesus the Christ, Volume 1, MaryAuthor: William WakeReleased on Project Gutenberg: September 1, 2004
- The suppressed Gospels and Epistles of the original New Testament of Jesus the Christ, Volume 2, the ProtevanglionAuthor: William WakeReleased on Project Gutenberg: September 1, 2004
- The suppressed Gospels and Epistles of the original New Testament of Jesus the Christ, Volume 3, Infancy of Jesus ChristAuthor: William WakeReleased on Project Gutenberg: September 1, 2004
- The suppressed Gospels and Epistles of the original New Testament of Jesus the Christ, Volume 4, NicodemusAuthor: William WakeReleased on Project Gutenberg: September 1, 2004
- The suppressed Gospels and Epistles of the original New Testament of Jesus the Christ, Volume 5, St. PaulAuthor: William WakeReleased on Project Gutenberg: September 1, 2004
- The suppressed Gospels and Epistles of the original New Testament of Jesus the Christ, Volume 6, ClementAuthor: William WakeReleased on Project Gutenberg: September 1, 2004
- The suppressed Gospels and Epistles of the original New Testament of Jesus the Christ, Volume 7, BarnabasAuthor: William WakeReleased on Project Gutenberg: September 1, 2004