The story, “Savage World!”, although drawn by Al Williamson years earlier, was rewritten by Wallace Wood and used in the first issue of Wood’s prozine, Witzend, in 1966. Apparently readers were confused about the genesis of the story, about Al Williamson’s friends (like Roy Krenkel, Angelo Torres, Frank Frazetta), who would chip in to help on a job. Wood included this paragraph in Witzend #2:
The “long since defunct” comic book Wood refers to is Buster Crabbe.
I couldn’t find my copy of Witzend #1 (someday I’ve just got to get organized) so I scanned it from its appearance in Marvel’s black and white magazine, Unknown Worlds of Science Fiction #1 in 1974.