Approximate date based on the years in which Wirsum exhibited as part of "The Hairy Who." Written at top of first page: Hairy Who answers. Wirsum gives a tongue-in-cheek description of what characterizes himself as a Hairy Who member, and what characterizes them in general.
Karl Wirsum letter to Don Baum, circa 1970. Don Baum papers, circa 1940-2004. Archives of American Art, Smithsonian Institution.
Current copyright status is undetermined
Archives of American Art, Smithsonian Institution Washington, D.C. 20560