The lettering is like his famous ‘Grass’ poster from this same year.
Related:
Sean
2020 Vibes
Our Eyes Are Open
Right On! 1970
Terry Lamb
Captain Midnight (1966)
Ultraviolet
Lothar-Günther Buchheim, 1968
Our Mother Ocean, Rick Griffin
Rick Griffin, 1975
Ecology Is for Children
Howard Bernstein, Sunkissed
Retina Circus, 1968
Pandora Productions
Union Light Co, 1969
R. Crumb, Fox River Patriot
Star Magazine, 1973
Philippe Caza
Austin, 1976
Prairie Jackson, Halloween ‘77
Julia Fryer, 1973
The Oracle on the Pentagon, 1967
Seattle Helix, February 1968
Novalis, 1976
Extra Soul Perception, 1968
Witches and Guns
Jacqui Morgan
Star, 1974
The Ark, 1967
PiPaPop, 1969