- The Rover Boys at Colby Hall; or, The Struggles of the Young CadetsAuthor: Edward StratemeyerReleased on Project Gutenberg: June 21, 2007
- The Rover Boys at College; Or, The Right Road and the WrongAuthor: Edward StratemeyerReleased on Project Gutenberg: November 1, 2003
- The Rover Boys at School; Or, The Cadets of Putnam HallAuthor: Edward StratemeyerReleased on Project Gutenberg: May 1, 2004
- The Rover Boys in Business; Or, The Search for the Missing BondsAuthor: Edward StratemeyerReleased on Project Gutenberg: February 1, 2004
- The Rover Boys in Camp; or, The Rivals of Pine IslandAuthor: Edward StratemeyerReleased on Project Gutenberg: May 7, 2005
- The Rover Boys in New York; Or, Saving Their Father's HonorAuthor: Edward StratemeyerReleased on Project Gutenberg: February 1, 2004
- The Rover Boys in the Air; Or, From College Campus to the CloudsAuthor: Edward StratemeyerReleased on Project Gutenberg: December 7, 2006
- The Rover Boys in the Jungle; Or, Stirring Adventures in AfricaAuthor: Edward StratemeyerReleased on Project Gutenberg: May 1, 2004
- The Rover Boys In The Mountains; Or, A Hunt for Fun and FortuneAuthor: Edward StratemeyerReleased on Project Gutenberg: September 14, 2004
- The Rover Boys on a Hunt; or, The Mysterious House in the WoodsAuthor: Edward StratemeyerReleased on Project Gutenberg: July 7, 2007
- The Rover Boys on Land and Sea: The Crusoes of Seven IslandsAuthor: Edward StratemeyerReleased on Project Gutenberg: August 8, 2005
- The Rover Boys on Snowshoe Island; or, The Old Lumberman's Treasure BoxAuthor: Edward StratemeyerReleased on Project Gutenberg: October 16, 2007
- The Rover Boys on the Farm; or, Last Days at Putnam HallAuthor: Edward StratemeyerReleased on Project Gutenberg: July 28, 2007
- The Rover Boys on the Great Lakes; Or, The Secret of the Island CaveAuthor: Edward StratemeyerReleased on Project Gutenberg: September 1, 2004
- The Rover Boys on the Ocean; Or, A chase for a fortuneAuthor: Edward StratemeyerReleased on Project Gutenberg: June 1, 2004
- The Rover Boys on the River; Or, The Search for the Missing HouseboatAuthor: Edward StratemeyerReleased on Project Gutenberg: May 25, 2005
- The Rover Boys on Treasure Isle; Or, The Strange Cruise of the Steam YachtAuthor: Edward StratemeyerReleased on Project Gutenberg: April 28, 2005
- The Rover Boys on Treasure Isle; or, The Strange Cruise of the Steam YachtAuthor: Edward StratemeyerReleased on Project Gutenberg: September 9, 2007
- The Rover Boys out West; Or, The Search for a Lost MineAuthor: Edward StratemeyerReleased on Project Gutenberg: July 1, 2004
- The Rover Boys Under Canvas; Or, The Mystery of the Wrecked SubmarineAuthor: Edward StratemeyerReleased on Project Gutenberg: November 1, 2007
- The Rover of the Andes: A Tale of Adventure on South AmericaAuthor: R. M. (Robert Michael) BallantyneReleased on Project Gutenberg: June 6, 2007
- The Rover's Secret: A Tale of the Pirate Cays and Lagoons of CubaAuthor: Harry Collingwood, William Christian SymonsReleased on Project Gutenberg: April 13, 2007
- The Rowley PoemsAuthor: Thomas ChattertonReleased on Project Gutenberg: July 28, 2004
- The Royal Game of the Ombre: Written at the Request of divers Honourable Persons—1665Author: AnonymousReleased on Project Gutenberg: October 1, 2005
- The Royal Guide to Wax Flower ModellingAuthor: Peachey, EmmaReleased on Project Gutenberg: January 8, 2008
- The Royal Pawn of Venice: A Romance of CyprusAuthor: Turnbull, Lawrence, Mrs., -Released on Project Gutenberg: March 8, 2008
- The Royal Picture AlphabetAuthor: John LeightonReleased on Project Gutenberg: November 25, 2007
- The Royal Road to Health; Or, the Secret of Health Without DrugsAuthor: Chas. A. (Charles Alfred) TyrrellReleased on Project Gutenberg: October 1, 2002
- The Rubaiyat of Ohow Dryyam: With Apologies to OmarAuthor: J. L. (James Leo) DuffReleased on Project Gutenberg: November 5, 2007
- The Rubaiyat of Omar KhayyamAuthor: Omar Khayyam, Edward FitzGeraldReleased on Project Gutenberg: April 1, 1995
- The Rubaiyat of Omar Khayyam Jr.Author: Wallace IrwinReleased on Project Gutenberg: April 1, 2004
- The Ruby of KishmoorAuthor: Howard PyleReleased on Project Gutenberg: January 1, 2003
- The Rubáiyát of a Persian KittenAuthor: Oliver HerfordReleased on Project Gutenberg: January 12, 2008
- The Rubáiyát of BridgeAuthor: Carolyn Wells, May Wilson PrestonReleased on Project Gutenberg: December 10, 2007
- The Rudder Grangers Abroad and Other StoriesAuthor: Frank R. StocktonReleased on Project Gutenberg: March 1, 2004
- The Ruinous FaceAuthor: Maurice HewlettReleased on Project Gutenberg: June 21, 2007
- The Ruins; Or, Meditation on the Revolutions of Empires and the Law of NatureAuthor: C.-F. (Constantin-François) VolneyReleased on Project Gutenberg: May 3, 2006
- The Rulers of the Lakes: A Story of George and ChamplainAuthor: Joseph A. (Joseph Alexander) AltshelerReleased on Project Gutenberg: February 3, 2005
- The Rules of the GameAuthor: Stewart Edward White, Lejaren A. HillerReleased on Project Gutenberg: August 16, 2004
- The Ruling Passion: Tales of Nature and Human NatureAuthor: Henry Van DykeReleased on Project Gutenberg: September 1, 1997
- The Runaway: Or, The Adventures of Rodney RovertonAuthor: UnknownReleased on Project Gutenberg: May 25, 2007
- The Runaway AsteroidAuthor: Cooper, Michael D.Released on Project Gutenberg: March 1, 2004
- The Runaway SkyscraperAuthor: Murray LeinsterReleased on Project Gutenberg: December 19, 2005
- The Rural Motor Express: To Conserve Foodstuffs and Labor and to Supply Rural Transportation.Author: United States. Council of National Defense. Highways Transport CommitteeReleased on Project Gutenberg: November 13, 2006
- The Russian Revolution; The Jugo-Slav MovementAuthor: Alexander Petrunkevitch, Frank Alfred Golder, Samuel N. (Samuel Northrup) Harper, Robert Joseph KernerReleased on Project Gutenberg: July 1, 2005
- The Rustlers of Pecos CountyAuthor: Zane GreyReleased on Project Gutenberg: April 8, 2005
- The Rámáyan of Válmíki, translated into English verseAuthor: Valmiki, Ralph T. H. (Ralph Thomas Hotchkin) GriffithReleased on Project Gutenberg: March 18, 2008
- The S. W. F. ClubAuthor: Caroline Emilia JacobsReleased on Project Gutenberg: April 6, 2005
- The Sable Cloud: A Southern Tale With Northern Comments (1861)Author: Nehemiah AdamsReleased on Project Gutenberg: January 6, 2005
- The Sacred Formulas of the Cherokees: Seventh Annual Report of the Bureau of Ethnology to the Secretary of the Smithsonian Institution, 1885-1886, Government Printing Office, Washington, 1891, pages 301-398Author: James MooneyReleased on Project Gutenberg: March 9, 2008
- The Sad Shepherd: A Christmas StoryAuthor: Henry Van DykeReleased on Project Gutenberg: May 29, 2005
- The Saddle Boys in the Grand Canyon; or, The Hermit of the CaveAuthor: Carson, James, CaptainReleased on Project Gutenberg: June 15, 2007
- The Saddle Boys of the Rockies; Or, Lost on Thunder MountainAuthor: Carson, James, CaptainReleased on Project Gutenberg: August 25, 2006
- The Safety Curtain, and Other StoriesAuthor: Ethel M. (Ethel May) Dell, Arthur Ignatius KellerReleased on Project Gutenberg: September 4, 2005
- The Saga of Grettir the Strong: Grettir's SagaAuthor: UnknownReleased on Project Gutenberg: July 5, 2008
- The sagas of Olaf Tryggvason and of Harald the Tyrant (Harald Haardraade)Author: Snorri Sturluson, Halfdan Egedius, Christian Krogh, Gerhard Munthe, Hjalmar Eilif Emanuel PeterssenReleased on Project Gutenberg: July 17, 2007
- The Sagebrusher: A Story of the WestAuthor: Emerson HoughReleased on Project Gutenberg: September 26, 2006
- The Sailor's Word-Book: An Alphabetical Digest of Nautical Terms, including Some More Especially Military and Scientific, but Useful to Seamen; as well as Archaisms of Early Voyagers, etc.Author: W. H. (William Henry) Smyth, Belcher, Edward, SirReleased on Project Gutenberg: July 7, 2008
- The SaintAuthor: Antonio Fogazzaro, William Roscoe ThayerReleased on Project Gutenberg: July 1, 2005
- The Saint's TragedyAuthor: Charles KingsleyReleased on Project Gutenberg: February 1, 2004