Giants on the Earth
S. P. Meek
The World of the Red Sun
Clifford D. Simak
Out Around Rigel
Robert H. Wilson
The Infra-Medians
Sewell Peaslee Wright
Wonder Stories 1931-11
Wonder Stories
Astounding Stories 1931-11 v08n02
Astounding Stories
Hawk Carse
Harry Bates & Desmond W. Hall
Hawk Carse (1)
The Planetoid of Peril
Paul Ernst
Raiders Invisible
E. V. Lucas & Desmond W. Hall
The Black Stone
Robert E. Howard
Cthulhu Mythos Tales (1930)
The Rat Racket
David H. Keller
Tetrahedra of Space
P. Schuyler Miller
Spawn of the Comet
H. Thompson Rich
The Tale of Satampra Zeiros
Clark Ashton Smith
Hyperborea (1)
The Terror from the Depths
John Hanson (1)
Amazing Stories 1931-10
Amazing Stories
Wonder Stories 1931-10
Amazing Stories Quarterly 1931 Fall v04n04
Amazing Stories Quarterly
Astounding Stories 1931-10 v08n01
Tarzan Triumphant
Edgar Rice Burroughs
Tarzan (15)