Poster produced by Greenpeace with the text 'It’s deadly serious Mr Reagan / Nuclear Weapons Testing must Stop', and a graphic portrait of Ronald Reagan, President of the United States, about 1985. This forms part of the Walt Patterson archive, and is autographed to Patterson from Greenpeace in silver pen in the top right-hand corner. Anti-nuclear Greenpeace poster: 'It’s deadly serious Mr Reagan' circa 1985