- The Rivals of Acadia: An Old Story of the New WorldAuthor: H. V. (Harriet Vaughan) CheneyLanguage: English
- The River of Darkness; Or, Under AfricaAuthor: William Murray GraydonLanguage: English
- The River's EndAuthor: James Oliver CurwoodLanguage: English
- The RivermanAuthor: Stewart Edward WhiteLanguage: English
- The Rock of Chickamauga: A Story of the Western CrisisAuthor: Joseph A. (Joseph Alexander) AltshelerLanguage: English
- The Rocks of ValpréAuthor: Ethel M. (Ethel May) DellLanguage: English
- The rogue elephantAuthor: Elliott Whitney, Fred J. ArtingLanguage: English
- The Romance of Golden Star ...Author: George Chetwynd Griffith, Alfred PearseLanguage: English
- The Romany RyeAuthor: George BorrowLanguage: English
- The Romany Rye: a sequel to "Lavengro"Author: George Borrow, Theodore Watts-DuntonLanguage: English
- The Romany Rye: A Sequel to 'Lavengro'Author: George Borrow, John SampsonLanguage: English
- The Rose in the RingAuthor: George Barr McCutcheonLanguage: English
- The Rose of Dawn: A Tale of the South SeaAuthor: Helen Hay Whitney, John La FargeLanguage: English
- The rose of old St. LouisAuthor: Dillon, Mary (Mary C. Johnson), -, J. André Castaigne, C. M. (Charles M.) RelyeaLanguage: English
- The Round-Up: A Romance of Arizona; Novelized from Edmund Day's MelodramaAuthor: Murray, John, Edmund Day, Marion Mills MillerLanguage: English
- The Rover Boys at Colby Hall; or, The Struggles of the Young CadetsAuthor: Edward StratemeyerLanguage: English
- The Rover Boys at College; Or, The Right Road and the WrongAuthor: Edward StratemeyerLanguage: English
- The Rover Boys at School; Or, The Cadets of Putnam HallAuthor: Edward StratemeyerLanguage: English
- The Rover Boys in Business; Or, The Search for the Missing BondsAuthor: Edward StratemeyerLanguage: English
- The Rover Boys in Camp; or, The Rivals of Pine IslandAuthor: Edward StratemeyerLanguage: English
- The Rover Boys in New York; Or, Saving Their Father's HonorAuthor: Edward StratemeyerLanguage: English
- The Rover Boys in the Air; Or, From College Campus to the CloudsAuthor: Edward StratemeyerLanguage: English
- The Rover Boys in the Jungle; Or, Stirring Adventures in AfricaAuthor: Edward StratemeyerLanguage: English
- The Rover Boys In The Mountains; Or, A Hunt for Fun and FortuneAuthor: Edward StratemeyerLanguage: English
- The Rover Boys on a Hunt; or, The Mysterious House in the WoodsAuthor: Edward StratemeyerLanguage: English
- The Rover Boys on Land and Sea: The Crusoes of Seven IslandsAuthor: Edward StratemeyerLanguage: English
- The Rover Boys on Snowshoe Island; or, The Old Lumberman's Treasure BoxAuthor: Edward StratemeyerLanguage: English
- The Rover Boys on the Great Lakes; Or, The Secret of the Island CaveAuthor: Edward StratemeyerLanguage: English
- The Rover Boys on the Ocean; Or, A chase for a fortuneAuthor: Edward StratemeyerLanguage: English
- The Rover Boys on the River; Or, The Search for the Missing HouseboatAuthor: Edward StratemeyerLanguage: English
- The Rover Boys on Treasure Isle; Or, The Strange Cruise of the Steam YachtAuthor: Edward StratemeyerLanguage: English
- The Rover Boys on Treasure Isle; or, The Strange Cruise of the Steam YachtAuthor: Edward StratemeyerLanguage: English
- The Rover Boys out West; Or, The Search for a Lost MineAuthor: Edward StratemeyerLanguage: English
- The Rover Boys Under Canvas; Or, The Mystery of the Wrecked SubmarineAuthor: Edward StratemeyerLanguage: English
- The Rover of the Andes: A Tale of Adventure on South AmericaAuthor: R. M. (Robert Michael) BallantyneLanguage: English
- The Rover's Secret: A Tale of the Pirate Cays and Lagoons of CubaAuthor: Harry Collingwood, William Christian SymonsLanguage: English
- The Ruby of KishmoorAuthor: Howard PyleLanguage: English
- The Rulers of the Lakes: A Story of George and ChamplainAuthor: Joseph A. (Joseph Alexander) AltshelerLanguage: English
- The Runaway: Or, The Adventures of Rodney RovertonAuthor: UnknownLanguage: English
- The Runaway SkyscraperAuthor: Murray LeinsterLanguage: English
- The Rustlers of Pecos CountyAuthor: Zane GreyLanguage: English
- The Saddle Boys in the Grand Canyon; or, The Hermit of the CaveAuthor: Carson, James, CaptainLanguage: English
- The Saddle Boys of the Rockies; Or, Lost on Thunder MountainAuthor: Carson, James, CaptainLanguage: English
- The Scalp HuntersAuthor: Mayne Reid, F. A. (Frank Algernon) StewartLanguage: English
- The Scarlet CarAuthor: Richard Harding DavisLanguage: English
- The Scarlet PimpernelAuthor: Orczy, Emmuska Orczy, BaronessLanguage: English
- The Scottish ChiefsAuthor: Jane PorterLanguage: English
- The Scouts of Stonewall: The Story of the Great Valley CampaignAuthor: Joseph A. (Joseph Alexander) AltshelerLanguage: English
- The Scouts of the ValleyAuthor: Joseph A. (Joseph Alexander) AltshelerLanguage: English
- The Scranton High Chums on the Cinder Path: Or, The Mystery of the Haunted QuarryAuthor: Ferguson, DonaldLanguage: English
- The Sea Lions; Or, The Lost SealersAuthor: James Fenimore CooperLanguage: English
- The Sea-Witch; Or, The African Quadroon: A Story of the Slave CoastAuthor: Maturin M. (Maturin Murray) BallouLanguage: English
- The Sea-WolfAuthor: Jack LondonLanguage: English
- The Search for the Silver City: A Tale of Adventure in YucatanAuthor: James OtisLanguage: English
- The Seats of the Mighty, Volume 2Author: Gilbert ParkerLanguage: English
- The Seats of the Mighty, Volume 4Author: Gilbert ParkerLanguage: English
- The Second LatchkeyAuthor: C. N. (Charles Norris) Williamson, A. M. (Alice Muriel) WilliamsonLanguage: English
- The Secret AdversaryAuthor: Agatha ChristieLanguage: English
- The Secret Chamber at ChadAuthor: Evelyn Everett-GreenLanguage: English
- The secret of the islandAuthor: Jules Verne, Agnes Kinloch KingstonLanguage: English