The Secret Mark

The Purple Flame

Red Dynamite: A Mystery Story for Boys

Whispers at Dawn, Or, The Eye

Witches Cove: A Mystery Story for Girls

The Crystal Ball: A Mystery Story for Girls

The Hidden Trail

The Roy J. Snell Mystery MEGAPACK ®: 20 Young Adult Mysteries!

Third Warning / A Mystery Story for Girls

Jane Withers and the Phantom Violin

Candid Camera Detective and By Bursting Flash Bulbs: 2 Jimmie Drury Mysteries

Riddle of the Storm

The Second Girl Detective Megapack: 23 Classic Mystery Novels for Girls