Books about Adventure stories (sorted alphabetically)
- Cord and Creese James De Mille
- Corporal Jacques of the Foreign Legion H. De Vere Stacpoole
- Cosmic Castaway Carl Jacobi
- Cosmic Junkman Rog Phillips
- Cosmic Looters Edmond Hamilton
- Cosmic Saboteur Frank M. Robinson
- Count of Monte Cristo Alexandre Dumas and Auguste Maquet
- Count Zarka: A Romance Sir William Magnay
- Courier of Fortune Arthur W. Marchmont
- Crashing suns Edmond Hamilton
- Creepin' Tintypes W. C. Tuttle
- Crimson Gardenia and Other Tales of Adventure Rex Beach
- Croc-Blanc (French) Jack London
- Cruise of the Jasper B. Don Marquis
- Cruise of the Pelican H. Bedford-Jones
- Cruise of the Snowbird: A Story of Arctic Adventure Gordon Stables
- Cruise of the Training Ship; Or, Clif Faraday's Pluck Upton Sinclair
- Crusoes of the Frozen North Gordon Stables
- Cry Chaos! Dwight V. Swain
- Crypt-City of the Deathless One Henry Kuttner
- Cryptogram: A Story of Northwest Canada William Murray Graydon
- Cupid of Campion Francis J. Finn
- Curlytops in the Woods; Or, Fun at the Lumber Camp Howard Roger Garis
- Dainty's Cruel Rivals; Or, The Fatal Birthday Mrs. Alex. McVeigh Miller
- Daisy Brooks; Or, A Perilous Love Laura Jean Libbey