The single panel above is from the story, “The Tell Tell Car,” as it appeared in Pete Millar’s DRAG CARtoons #2 (December 1963).
Marshall Matt Dillon, of course, was played by actor James Arness; in interviews, Arness generally claimed to be 6′ 6″ tall, but some sources say he was actually 6′ 7″, which is a full three inches taller than Clint Eastwood was, back in his salad spaghetti days.