Raymond Z. Gallun 's Books
A very well recieved series by Raymond Z. Gallun are the books, featuring tropes. The most popular books are Mind Over Matter - A Collection of Short Fiction, Hell Stuff For Planet X, The Planet Strappers, Asteroid of Fear, The Eternal Wall, Then and Now (ss), Then and Now : A Collection of SF, Then and Now: Another Collection of Science Fiction, Comet's Burial, The Revolt of the Star Men, Ten (Stories) to The Stars, Godson of Almarlu: A Collection of Science Fiction Novellas, which was published in 2022.
Mind Over Matter - A C
Hell Stuff For Planet 
The Planet Strappers
Asteroid of Fear
The Eternal Wall
Then and Now (ss)
Then and Now : A Colle
Then and Now: Another 
Comet's Burial
The Revolt of the Star
Ten (Stories) to The S
Godson of Almarlu: A C