Valley of the Black Sun

From Author Wars - https://authorwars.com/books/valley-of-the-black-sun-839374.html

Overview:

Title: Valley of the Black Sun
Author: F. Magarian
Year: 1943
Type: Interior Art

Editions/Publications:

Unknown. Amazing Stories, April 1943 (Unknown, F. Magarian, Ziff-Davis Publishing Company, $0.25, 244 pages, pulp, MAGAZINE)
Unknown. Science Fiction Adventure Classics, Fall 1971 (Unknown, F. Magarian, Ultimate Publishing Co., Inc., $0.60, 132 pages, digest, MAGAZINE)