Books about Mystery and detective stories (sorted alphabetically)
- Bradys and the Girl Smuggler; Or, Working for the Custom House Francis Worcester Doughty
- Bradys' Race for Life; or, Rounding Up a Tough Trio: A Detective Story of Life Francis Worcester Doughty
- Bungalow Boys in the Great Northwest John Henry Goldfrap
- Camp Fire Girls at the Seashore; Or, Bessie King's Happiness Jane L. Stewart
- Camp Fire Girls in After Years Margaret Vandercook
- Campfire Girls on Station Island; Or, The Wireless from the Steam Yacht Margaret Penrose
- Camp Fire Girls; Or, The Secret of an Old Mill Howard Roger Garis
- Camp Fire Girls Solve a Mystery; Or, The Christmas Adventure at Carver House Hildegard G. Frey
- Captain Lucy in the Home Sector Aline Havard
- chronicles of Michael Danevitch of the Russian Secret Service Dick Donovan
- Clock Strikes Thirteen Mildred A. Wirt
- Clock Struck One Fergus Hume
- Clue of the Gold Coin Helen Wells
- Clue of the Silken Ladder Mildred A. Wirt
- Comrades on River and Lake Ralph Victor
- Connie Carl at Rainbow Ranch Joan Clark
- Copper Coleson's Ghost Edward P. Hendrick
- Corner House Girls Growing Up Grace Brooks Hill
- Corner House Girls on a Houseboat Grace Brooks Hill
- Corner House Girls Solve a Mystery Grace Brooks Hill
- Count's Chauffeur William Le Queux
- Crime of the Under-seas Guy Boothby
- Crimson Cryptogram: A Detective Story Fergus Hume
- Crimson Thread: An Adventure Story for Girls Roy J. Snell
- Cruise of the O Moo Roy J. Snell