The Crimson Skull
Unknown
The Crimson stain - The Tortured Soul
Unknown
Pawns of Evil - House of Terror
Unknown
The Flame Fighter; Scalding Seas
Unknown
As Mars Sees Us
Frank R. Paul
Stories of the Stars... Andromeda
Frank R. Paul
Science Fiction Quarterly: Why Should I Stop?
Frank Kelly Freas
Stories of the Stars - The Great Nebula
Frank R. Paul
Jungle Mystery - The Mystery Cavern
Unknown
The Crimson stain - The Mysterious Disappearance
Unknown
The Crimson Skull #2
Unknown
Authentic Science Fiction: The Singing Spheres
Unknown
Spaceship Seen Over Idaho!
James B. Settles (JBS)
Warriors of Other Worlds #1
Malcolm H. Smith
The Lost Squadron
Unknown
Impossible But True
James B. Settles (JBS)
The Secret Passage - House of Terror Serial
Unknown
The Crimson stain - The Broken Spell
Unknown
Airship of Venus
James B. Settles (JBS)
Jungle Mystery - The Ivory Trail
Unknown
Stories of the Stars - Antares
Frank R. Paul
The Missing Men serial from the House of Terror
Unknown
Chasing the Limited
Unknown
Thrilling Wonder Stories: Sheena and the X Machine
Earle Bergey
Jungle Mystery - Poisoned Fangs
Unknown
Comet: The Immortal
Leo Morey
The Cycle Bullet - Serial
Unknown
Space Stories: The Big Jump
Ed Emshwiller
Bad Men of the Wild West!
Science Fiction Quarterly: Escape Valve
A. Leslie Ross
The Cipher Key - 13th episode Do or Die
Unknown
The Secret in the Flame
Unknown
Jungle Mystery -Trapped by the Enemy
Unknown
Science Fiction: Captured by the Red Giant
Frank R. Paul
Spaceship in the Jungle
James B. Settles (JBS)
The Moonshine Feud
Unknown
The Secret Cavern - Do or Due
Unknown
The Crimson stain - The Phantom Image
Unknown
Science Fiction Quarterly: Intervention
Milton Luros
The Bull - Dogger #1
Unknown
The House of Terror - Out of the Night
Unknown
The Flame Fighter; Scalding seas #1
Unknown
The Flame Fighter - Smoke Eaters
Unknown
A Fight for Millions - In the Clutches
Unknown
The Radio Detective
Unknown
The Foreign Legion
Unknown
Stories of the Stars...Aldebaran
Frank R. Paul
Mica Sailboat of Mercury
James B. Settles (JBS)
The Lost Squadron #1
Unknown
The Raider Emden #1
Unknown
Robinson Crusoe - No Greater Love
Unknown
The Four Feathers
Unknown
Science Fiction Quarterly: One of Them?
Ed Emshwiller
The Lost Ring - Do or Die
Unknown
Science Fiction Quarterly: The Far Detour
Milton Luros
Warriors of Other Worlds
Malcolm H. Smith
Scotty of the Scouts - true as Steel
Unknown
Comet: Lightning's Course
Frank R. Paul
Do or die - Satan's Twin
Unknown
Jungle Mystery - The Jungle Terror
Unknown
Mountains of Manhattan #1
Unknown
Science Fiction Quarterly: The Eye in the Window
Ed Emshwiller
Comet: Ice Planet
Frank R. Paul
Science Fiction Quarterly: Deux Ex Machina
Ed Emshwiller
Hornet's Nets - Do or Die
Unknown
Jungle Mystery - The Lion's Den
Unknown
Science Fiction Quarterly: All the Answers
Milton Luros