Check out Mike Zeck’s vintage John Carter: Warlord of Mars piece! The art originally appeared as a cover for RBCC #138 published in September of 1977.
Ah, those were the days. My buddy, John Beatty had turned me on to the world of fanzines. Mike Zeck was a regular contributor to the Rocket’s Blast Comic Collector (RBCC) and seeing Zeck’s art was always a treat.
Source: Ken Meyer Jr.’s Ink Stains.