Books about Friendship -- Juvenile fiction (sorted alphabetically)
- Ranch Girls and Their Great Adventure Margaret Vandercook
- Ranch Girls at Boarding School Margaret Vandercook
- Real Gold: A Story of Adventure George Manville Fenn
- Rectory Children Mrs. Molesworth
- Red Dynamite Roy J. Snell
- Red-Robin Jane Abbott
- Red Rose and Tiger Lily; Or, In a Wider World L. T. Meade
- Red, White, Blue Socks, Part First Sarah L. Barrow
- Red, White, Blue Socks. Part Second Sarah L. Barrow
- Rinkitink in Oz L. Frank Baum
- Rinkitink in Oz L. Frank Baum
- robbers' cave : A tale of Italy A. L. O. E.
- Robin Redbreast: A Story for Girls Mrs. Molesworth
- Rockspur Eleven: A Fine Football Story for Boys Burt L. Standish
- Rod and Gun Club Harry Castlemon
- Rodney, the Overseer Harry Castlemon
- Roger the ranger: A story of border life among the Indians Eliza F. Pollard
- Rough and Ready; Or, Life Among the New York Newsboys Jr. Horatio Alger
- Ruby at School Mrs. George A. Paull
- Ruth Fielding of the Red Mill; Or, Jasper Parloe's Secret Alice B. Emerson
- Ruth Fielding on Cliff Island; Or, The Old Hunter's Treasure Box Alice B. Emerson
- Ruth: Kertomus tytöille (Finnish) Anonymous
- Sailor in Spite of Himself Harry Castlemon
- Sappers and Miners: The Flood beneath the Sea George Manville Fenn
- Sarah Dillard's Ride: A Story of the Carolinas in 1780 James Otis