WORLD'S FINEST NO.151 AUGUST 1965. COVER by Curt Swan & George Klein.
"The Infinite Evolutions of Superman and Batman" (Part I) by Curt Swan & Sheldom Moldoff. 8 pages.
"The Caveman Superman Versus the Future Batman" (Part II) by Curt Swan & Sheldom Moldoff. 8 pages.
Congorila