Books about Adventure stories (sorted alphabetically)
- Soul Eaters William Conover
- Soul Stealers Chester S. Geier
- South from Hudson Bay: An Adventure and Mystery Story for Boys Ethel C. Brill
- Space Bat Carl Selwyn
- Space-Lane of No-Return George A. Whittington
- Space Oasis Raymond Z. Gallun
- Space-Trap at Banya Tor W. J. Matthews
- Space-Wolf Ray Cummings
- Spanish Galleon Charles Sumner Seeley
- Sphere of the Never-Dead Sam Carson
- Spider Men of Gharr Wilbur S. Peacock
- Spoilers of the Spaceways W. Bradford Martin
- Spring of a Lion H. Rider Haggard
- Stalemate in Space Charles L. Harness
- Star Guardsman Albert dePina
- Star-Master Ray Cummings
- Star Pirate Frederic Arnold Kummer
- Star Ship Poul Anderson
- Starvecrow Farm Stanley John Weyman
- Steam-Shovel Man Ralph Delahaye Paine
- Stolen Idols E. Phillips Oppenheim
- Stoomhuis: De IJzeren Reus (1/2) (Dutch) Jules Verne
- Stoomhuis: De Waanzinnige der Nerbudda (2/2) (Dutch) Jules Verne
- Stories of Enchantment Jane Pentzer Myers
- Storm Halliwell Sutcliffe