Roy J Snell

The Blue Envelope

Lost In The Air

Jet Plane Mystery

The Golden Circle; A Mystery Story For Girls

Jane Withers And The Phantom Violin

Whispers At Dawn; Or, The Eye

The Secret Mark

The Red Lure

The Firebug

The Galloping Ghost

Green Eyes

The Cruise Of The O Moo

The Crystal Ball

The Purple Flame

White Fire

On The Yukon Trail

The Purple Flame

Little White Fox And His Arctic Friends

The Purple Flame

The Secret Mark

The Firebug

Sparky Ames Of The Ferry Command

White Fire

Panther Eye

A Ticket To Adventure

Norma Kent Of The Wacs

Third Warning

Third Warning

Mystery Wings

The Shadow Passes

Sparky Ames Of The Ferry Command

Gypsy Flight

Red Dynamite

The Shadow Passes

The Crystal Ball

Mystery Wings

Sally Scott Of The Waves

Gypsy Flight

Sally Scott Of The Waves

Norma Kent Of The Wacs

Curlie Carson Listens In

The Purple Flame; A Mystery Story For Girls

Triple Spies

The Secret Mark

Mystery Wings; A Mystery Story For Boys