There was a three year hiatus between the publication of Zap 5 in 1970 and Zap 6 in 1973, and in that time every existing issue sold out, reprint after reprint.
Back the comic bounced with issue number 6, this one featuring all the contributors who made the magazine what it was, including Gilbert Shelton, Robert Williams and Robert Crumb. Widely criticised for its promiscuity and general obscenity, yet universally loved by anyone interested in the history of youth counterculture and underground comic art, Zap is a journey back to the 1970s, when freedom of expression was gold dust.