Books in Science Fiction (sorted alphabetically by author)
- See? Edward G. Robles
- Sorry: Wrong Dimension Ross Rocklynne
- Jaywalker Ross Rocklynne
- Treachery in Outer Space Carey Rockwell
- Stand by for Mars! Carey Rockwell
- Danger in Deep Space Carey Rockwell
- On the Trail of the Space Pirates Carey Rockwell
- The Space Pioneers Carey Rockwell
- The Revolt on Venus Carey Rockwell
- Sabotage in Space Carey Rockwell
- Under the Ocean to the South Pole; Or, the Strange Cruise of the Submarine Wonder Roy Rockwood
- Dave Dashaway and His Hydroplane; Or, Daring Adventures over the Great Lake Roy Rockwood
- Five Thousand Miles Underground; Or, the Mystery of the Centre of the Earth Roy Rockwood
- Lost on the Moon; Or, in Quest of the Field of Diamonds Roy Rockwood
- On a Torn-Away World; Or, the Captives of the Great Earthquake Roy Rockwood
- Through Space to Mars; Or, the Longest Journey on Record Roy Rockwood
- Through Space to Mars; Or, the Longest Journey on Record Roy Rockwood
- Through the Air to the North Pole Roy Rockwood
- The Wizard of the Sea; Or, A Trip Under the Ocean Roy Rockwood
- Don't Look Now Leonard Rubin
- The Second Voice Mann Rubin
- The Moon Destroyers Monroe K. Ruch
- The Deep One Neil P. Ruzic
- The Lamps of the Angels Richard Sabia
- I Was a Teen-Age Secret Weapon Richard Sabia