One of the catch phrases of the 60's was "Keep On Truckin', immortalized by R. Crumb in underground comix and the Grateful Dead's anthem, "Truckin'," which told of their experiences on tour, including their infamous drug bust in New Orleans. This original proposal for a 1970 Warner Brothers promo poster by John Van Hamersveld reinvents the R. Crumb character in Grateful Dead style. 10.75x8" on 15x20 art board. NRMT.