Snell Roy J

The Secret Mark

The Red Lure

Whispers At Dawn; Or, The Eye

The Crystal Ball

White Fire

Triple Spies

The Firebug

Mystery Wings; A Mystery Story For Boys

The Galloping Ghost

Green Eyes

The Cruise Of The O Moo

A Ticket To Adventure A Mystery Story For Girls

On The Yukon Trail

The Rope Of Gold

The Purple Flame

The Blue Envelope

Third Warning A Mystery Story For Girls

The Purple Flame; A Mystery Story For Girls

Sparky Ames Of The Ferry Command

Panther Eye

Lost In The Air

The Secret Mark

Lost In The Air

Le Rideau Magique Une Histoire Mystérieuse Pour Les Filles

The Shadow Passes;A Mystery Story For Boys

Riddle Of The Storm

Sign Of The Green Arrow

The Silent Alarm

Little White Fox And His Arctic Friends

The Crystal Ball; A Mystery Story For Girls

Johnny Longbow

The Crimson Flash

The Crimson Thread; An Adventure Story For Girls

Norma Kent Of The Wacs

The Phantom Violin;A Mystery Story For Girls

The Firebug

The Magic Curtain; A Mystery Story For Girls

Green Eyes

The Blue Envelope

The Galloping Ghost

Forbidden Cargoes

The Cruise Of The O Moo

Curlie Carson Listens In

The Arrow Of Fire; A Mystery Story For Boys

Forbidden Cargoes (Mystery Stories For Boys, Vol. 10)