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- Spies — Juvenile fiction
Spies — Juvenile fiction — Audiobooks
A Yankee Girl at Shiloh
by Alice Turner Curtis
The Wailing Octopus: A Rick Brant Science-Adventure Story
by Harold L. (Harold Leland) Goodwin
A Jacobite Exile
by G. A. (George Alfred) Henty
On The Blockade
by Oliver Optic
Nancy Dale, Army Nurse
by Ruby Lorraine Radford
Aunt Jane's Nieces at Work
by L. Frank (Lyman Frank) Baum
Patty—Bride
by Carolyn Wells
Captain Lucy in the Home Sector
by Aline Havard
The Boy Spies of Philadelphia
by James Otis
Norma Kent of the WACS
by Roy J. (Roy Judson) Snell
Secrets of Radar
by Roy J. (Roy Judson) Snell
Dorothy Dixon and the Double Cousin
by Dorothy Wayne
The Automobile Girls at Washington; Or, Checkmating the Plots of Foreign Spies
by Laura Dent Crane
Bob Cook and the German Spy
by Paul G. (Paul Greene) Tomlinson
Sign of the Green Arrow
by Roy J. (Roy Judson) Snell
The Boy Spies with the Regulators
by James Otis
The Boy Volunteers on the Belgian Front
by Kenneth Ward
The Banner Boy Scouts Mystery
by George A. Warren