- Round the World in Seven DaysAuthor: Strang, Herbert, Michael, A. C. (Arthur C.) [Illustrator]Language: English
- Round-about Rambles in Lands of Fact and FancyAuthor: Frank R. StocktonLanguage: English
- Rowdy of the Cross LAuthor: B. M. BowerLanguage: English
- Roy Blakeley's Adventures in CampAuthor: Percy Keese FitzhughLanguage: English
- Roy Blakeley's Bee-line HikeAuthor: Percy Keese Fitzhugh, Robert Emmett OwenLanguage: English
- Roy Blakeley, PathfinderAuthor: Percy Keese Fitzhugh, Howard L. (Howard Livingston) HastingsLanguage: English
- Roy Blakeley: His StoryAuthor: Percy Keese Fitzhugh, Howard L. (Howard Livingston) HastingsLanguage: English
- Rujub, the JugglerAuthor: G. A. (George Alfred) HentyLanguage: English
- Rung Ho! A NovelAuthor: Talbot MundyLanguage: English
- Rupert of Hentzau: From The Memoirs of Fritz Von Tarlenheim: Sequel to The Prisoner of ZendaAuthor: Anthony HopeLanguage: English
- Ruth Fielding and the Gypsies; Or, The Missing Pearl NecklaceAuthor: Emerson, Alice B.Language: English
- Ruth Fielding at Snow Camp; Or, Lost in the BackwoodsAuthor: Emerson, Alice B.Language: English
- Ruth Fielding at the War Front; or, The Hunt for the Lost SoldierAuthor: Emerson, Alice B.Language: English
- Ruth Fielding Down East; Or, The Hermit of Beach Plum PointAuthor: Emerson, Alice B.Language: English
- Ruth Fielding in Moving Pictures; Or, Helping the Dormitory FundAuthor: Emerson, Alice B.Language: English
- Ruth Fielding in the Great Northwest; Or, The Indian Girl Star of the MoviesAuthor: Emerson, Alice B.Language: English
- Ruth Fielding of the Red Mill; Or, Jasper Parloe's SecretAuthor: Emerson, Alice B.Language: English
- Ruth Fielding on Cliff Island; Or, The Old Hunter's Treasure BoxAuthor: Emerson, Alice B.Language: English
- Ruth Fielding on the St. Lawrence; Or, The Queer Old Man of the Thousand IslandsAuthor: Emerson, Alice B.Language: English
- Ryöstölapsi: Kertomus David Balfourin seikkailuistaAuthor: Robert Louis Stevenson, O. E. LampénLanguage: Finnish
- Sabotage in SpaceAuthor: Rockwell, Carey, Willy Ley, Glanzman, Louis [Illustrator]Language: English
- Sail Ho! A Boy at SeaAuthor: George Manville FennLanguage: English
- Sailing Alone Around the WorldAuthor: Joshua Slocum, Thomas Fogarty, George VarianLanguage: English
- Saint Bartholomew's Eve: A Tale of the Huguenot WarsAuthor: G. A. (George Alfred) Henty, Herbert James DraperLanguage: English
- Sally of MissouriAuthor: Rose E. (Rose Emmet) YoungLanguage: English
- Salt Water: The Sea Life and Adventures of Neil D'Arcy the MidshipmanAuthor: William Henry Giles Kingston, Lacey, C. J. de [Illustrator]Language: English
- Salute to AdventurersAuthor: John BuchanLanguage: English
- Sammie and Susie LittletailAuthor: Howard Roger Garis, Louis WisaLanguage: English
- Samuel the SeekerAuthor: Upton SinclairLanguage: English
- SandyAuthor: Alice Caldwell Hegan RiceLanguage: English
- Sans dessus dessousAuthor: Jules VerneLanguage: French
- Sans-peur le corsaireAuthor: G. de La LandelleLanguage: French
- Sappers and Miners: The Flood beneath the SeaAuthor: George Manville Fenn, Hal HurstLanguage: English
- Sarréo: 1901Author: Louis BeckeLanguage: English
- Saved at seaAuthor: Walton, O. F., Mrs.Language: English
- Saved by the LifeboatAuthor: R. M. (Robert Michael) BallantyneLanguage: English
- Saved from the Sea; Or, The Loss of the Viper, and her Crew's Saharan AdventuresAuthor: William Henry Giles Kingston, Edouard RiouLanguage: English
- Scaramouche: A Romance of the French RevolutionAuthor: Rafael SabatiniLanguage: English
- Schelmuffskys wahrhaftige, kuriöse und sehr gefährliche Reisebeschreibung zu Wasser und zu LandeAuthor: Christian Reuter, Gottlieb Fritz, Ludwig BerwaldLanguage: German
- Schwatka's Search: Sledging in the Arctic in Quest of the Franklin RecordsAuthor: William H. (William Henry) GilderLanguage: English
- Scott's Last Expedition, Volume I: Being the journals of Captain R. F. ScottAuthor: Robert Falcon ScottLanguage: English
- Scènes de mer, Tome IAuthor: Edouard CorbièreLanguage: French
- Scènes de mer, Tome IIAuthor: Edouard CorbièreLanguage: French
- Sea urchinsAuthor: W. W. (William Wymark) JacobsLanguage: English
- Sea-dogs all!Author: Tom BevanLanguage: English
- Secret History Revealed By Lady Peggy O'MalleyAuthor: C. N. (Charles Norris) Williamson, A. M. (Alice Muriel) Williamson, Clarence RoweLanguage: English
- Set in SilverAuthor: C. N. (Charles Norris) Williamson, A. M. (Alice Muriel) WilliamsonLanguage: English
- SheAuthor: H. Rider (Henry Rider) HaggardLanguage: English
- She and AllanAuthor: H. Rider (Henry Rider) HaggardLanguage: English
- Shelled by an Unseen FoeAuthor: James FiskeLanguage: English
- Shifting Winds: A Tough YarnAuthor: R. M. (Robert Michael) BallantyneLanguage: English
- Side Show StudiesAuthor: Metcalfe, Francis, Oliver HerfordLanguage: English
- Siegfried, der HeldAuthor: Rudolf HerzogLanguage: German
- Silver LakeAuthor: R. M. (Robert Michael) BallantyneLanguage: English
- Sir Francis Drake RevivedAuthor: Nichols, Philip, activeLanguage: English
- Sir Francis Drake's Famous Voyage Round the WorldAuthor: Pretty, FrancisLanguage: English
- Sir John Constantine: Memoirs of His Adventures At Home and Abroad and Particularly in the Island of Corsica: Beginning with the Year 1756Author: Arthur Quiller-CouchLanguage: English
- Sir Ludar: A Story of the Days of the Great Queen BessAuthor: Talbot Baines ReedLanguage: English
- Sir Mortimer: A NovelAuthor: Mary Johnston, F. C. (Frederick Coffay) YohnLanguage: English
- Sir NigelAuthor: Arthur Conan DoyleLanguage: English