He did the "Odds 'N Ends" fact page, on the inside back cover.
Maybe somebody who has The Limited Collectors' Edition of this comic, published in the 1970s, can tell you more - from memory, it wasn't included in the Millennium Edition.
Contrary to my previous post, I have since found out that the still-living very longtime DC colorist and production man, Jack Adler also worked on this issue - he colored the cover, at least.
I have a horrible reprint of Action 1, made by Nestle Quick and probably worth a handful of gravel!