Robert Dennis Crumb is an American cartoonist who often signs his work R. Crumb. His work displays a nostalgia for American folk culture of the late 19th and early 20th centuries, and satire of contemporary American culture.

Underground comix are small press or self-published comic books that are often socially relevant or satirical in nature. They differ from mainstream comics in depicting content forbidden to mainstream publications by the Comics Code Authority, including explicit drug use, sexuality, and violence. They were most popular in the United States in the late 1960s and 1970s, and in the United Kingdom in the 1970s.