World Edge
From Author Wars - https://authorwars.com/books/world-edge-88959.html
Editions/Publications:
- Unknown. Amazing Stories, November 1962 (Unknown, Jack Egan, Ziff-Davis Publishing Company, $0.35, 132 pages, digest, MAGAZINE)
- Unknown. Great Science Fiction, Fall 1967 (Unknown, Jack Egan, Ultimate Publishing Co., Inc., $0.50, 132 pages, digest, MAGAZINE)
- 2023 . World Edge (2023, Jack Egan, Project Gutenberg, $0.00, ebook, Chapter Book)