Lawrence Stevens cover and Virgil Finlay art.
Super Science Stories #7 – UK Pulp - March 1952 - Anderson, Gallun, McIntosh
Marvel Science Stories Pulp 2nd Series May 1951 Vol. 3 #3 GD+ 2.5
COSMIC SCIENCE STORIES 1940-BOARDMAN-JOHN D MACDONALD golden age pulp sci-fi
Marvel Science Stories Pulp #3 February 1939
