Ultra Evolution

From Author Wars - https://authorwars.com/books/ultra-evolution-191289.html

Overview:

Title: Ultra Evolution
Author: Polton Cross
Year: 1948
Type: Short Fiction

Editions/Publications:

Unknown. Startling Stories, January 1948 (Unknown, Polton Cross, Better Publications, Inc., $0.15, 116 pages, pulp, MAGAZINE)