Bidspirit auction | Robert Crumb (Attributed): Mr. Natural

Robert Crumb (Attributed): Mr. Natural - Robert Crumb (Attributed) (American, 1943- ): Mr. Natural. Mixed media on paper, signed lower right, unframed. Robert Crumb is a prolific American cartoonist whose work satirizes American culture . Much of his work is pornographic in nature and plays off the Tijuana Bible Cartoons of the 1930s and 1940s.