Books about Adventure stories (sorted alphabetically)
- Secret of the Painting Robert Moore Williams
- Secret of the Sundial Mildred A. Wirt
- Secret Service Submarine: A Story of the Present War Guy Thorne
- Secrets of the Andes James H. Foster
- Seikkailu rosenkreuziläisten luona (Finnish) Franz Hartmann
- Seven Frozen Sailors George Manville Fenn
- Seven Jewels of Chamar Raymond F. Jones
- seven missionaries H. C. McNeile
- sfida al Polo (Italian) Emilio Salgari
- Shadow-Gods Bill Garson
- Shadow of the Czar John R. Carling
- Shadrach" Nelson S. Bond
- Shannach—The Last Leigh Brackett
- She H. Rider Haggard
- She and Allan H. Rider Haggard
- shears of destiny Leroy Scott
- Shipwreck Joseph Spillman
- Shoes of Fortune Neil Munro
- Sign of the Spider Bertram Mitford
- Silent Barrier Louis Tracy
- Silver Plague Albert dePina
- Silver Rags Willis Boyd Allen
- Silver Ring Mystery Helen Wells
- Sinclair's luck : A story of adventure in East Africa Percy F. Westerman
- Sinister Invasion Edmond Hamilton