Poster advertising a legalise cannabis rally held in Speakers Corner, Hyde Park, London in July 1967
Known as "Legalise Cannabis - The Putting Together Of The Heads"
Colour offset lithograph printed in red and black ink on gold metallic foiled paper.
Printed in black centre right border: "Sharp 67"
Printed in black along lower border:
"BO1 Cannabis by Martin Sharp Published by Big O Posters Ltd 219 Eversleigh Rd London SW11 5UY 012283392 Printed in England"
