Only a continent such as South America with its great unexplored spaces, its great natural resources, its jungles, could have held the secret of Mentor. I could only gasp as I thought of what a prodigious organization had grown out of the aimless fumblings of Howard Mentor with man-made evolution. Could this strange though powerful nation some day put its mark on the world?
Pseudonym of Leslie F. Silberberg (born Leslie Frances Rubenstein). She was the author of several science fiction stories, published in the 1920s-1940s in American pulp magazines such as "Amazing Stories", "Wonder Stories" and "Weird Tales".
Her story "Out of the Void" was expanded and republished as a novel in 1967.
A short novel by one of the first women to write science fiction. It was published in Air Wonder Stories, another magazine by Hugo Gernsback, in July 1929.
In the Brazilian Amazon rainforest lives a strange winged people who kidnap human women. Our protagonist ends up there and discovers their society.