By 1969, Shelton had moved to San Francisco, and that year he co-founded the underground publisher Rip Off Press with three friends from Texas: fellow cartoonist Jack Jackson, Fred Todd, and Dave Moriaty. Rip Off Press published the bulk of all later Wonder Wart-Hog comics. The character appeared in "Rip Off Comix" #1-12 (1977–1983) (with the exception of issue #7) and in several of the magazine-sized issues of "Rip Off". His last new appearance in "Rip Off Comix" was in the 20th anniversary issue (#21) 1988.