This issue is a variant of Zap Comix (Apex Novelties, 1967 series) #2. There exist further variants.
One pager with an early abstraction of Mr. Peanut.
One pager of scatalogical humor.
One pager with abstracted duck.
One pager with abstracted bear and frog.
One pager with Escher-like boxes, abstracted Mr. Peanut.
in Love to Ten (Reallusion, 1985 series) #[nn] ([1985])
in The Complete Crumb Comics (Fantagraphics, 1987 series) #5 - Happy Hippy Comix (July 1990)
in The Book of Mr. Natural (Fantagraphics, 1995 series) #[nn] (September 1995)
in Klassiker der Comic-Literatur (Frankfurter Allgemeine, 2005 series) #19 (2006)
in The Book of Mr. Natural (Fantagraphics, 2010 series) #[nn] (April 2010)camels, gladiators, hot dogs.
First appearance of Griffin's angelic and demonic flying eyeballs.
Sequence on inside back cover with abstracted duck and mouse.
Some information for this sequence from Denis Wheary via the GCD Error Tracker.
Sequence on back cover of issue.