Step IV

From Author Wars - https://authorwars.com/books/step-iv-864532.html

Overview:

Title: Step IV
Author: Varga
Year: 1960
Type: Interior Art

Editions/Publications:

Unknown. Amazing Science Fiction Stories, June 1960 (Unknown, Varga, Ziff-Davis Publishing Company, $0.35, 148 pages, digest, MAGAZINE)
Unknown. SF Greats, Winter 1970 (Unknown, Varga, Ultimate Publishing Co., Inc., $0.50, 132 pages, digest, MAGAZINE)