They've Been Working On ...

From Author Wars - https://authorwars.com/books/theyve-been-working-on-856974.html

Overview:

Title: They've Been Working On ...
Author: Freas
Year: 1958
Type: Interior Art

Editions/Publications:

Unknown. Astounding Science Fiction, August 1958 (Unknown, Freas, Street & Smith Publications, Inc., $0.35, 164 pages, digest, MAGAZINE)
Unknown. Astounding Science Fiction, November 1958 (Unknown, Freas, Atlas Publishing and Distribution Co. Ltd, 1/9, 132 pages, digest, MAGAZINE)