Where Are the Worlds of Yesteryear?

From Author Wars - https://authorwars.com/books/where-are-the-worlds-of-yesteryear-1248564.html

Overview:

Title: Where Are the Worlds of Yesteryear?
Author: Jack Gaughan
Year: 1967
Type: Interior Art

Variant Titles:

1967. Where Are the Worlds of Yesteryear?