This issue is a variant of Motor City Comics (Rip Off Press, 1969 series) #1.
Underground Comix are known for using different prices, covers (art or color variations) and/or interior content to distinguish between printings.
1st print April 1969 has 0.50 USD cover price. Has no cover logo or copyright symbol on inside of front cover.
2nd print has 0.50 USD cover price. Copyright symbol added to inside of front cover.
3rd print has 0.50 USD cover price. Rip Off Press brand added to cover.
4th print has 0.50 USD cover price. Rip Off Press address on back cover. 1st-3rd print had Print Mint address.
5th print has 0.50 USD cover price. Has matte finish cover. 6th print has 0.75 USD cover price.
7th print has 2.50 USD cover price. Published by Last Gasp.
Inside front cover.
in The Best of The Rip Off Press (Rip Off Press, 1973 series) #1 - Comix (1973)
in The Apex Treasury of Underground Comics / The Best of Bijou Funnies (Quick Fox, 1981 series) #[nn] (1981)
in The Complete Crumb Comics (Fantagraphics, 1987 series) #5 - Happy Hippy Comix (July 1990)
in R. Crumb's America (Last Gasp, 1995 series) #[nn] (October 1995)
in The Complete Crumb Comics (Fantagraphics, 1987 series) #6 - On the Crest of a Wave (January 1991)
in R. Crumb's America (Last Gasp, 1995 series) #[nn] (October 1995)
in The R. Crumb Handbook (MQ Publications, 2005 series) #[nn] (2005)
in The Complete Crumb Comics (Fantagraphics, 1987 series) #6 - On the Crest of a Wave (January 1991)
in R. Crumb's America (Last Gasp, 1995 series) #[nn] (October 1995)Inside back cover.
Sequence on back cover.