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Robert Crumb was born on August 30, 1943, in Philadelphia, Pennsylvania. He is an American cartoonist, writer, and musician who is best known for his underground comix, such as Fritz the Cat, Zap Comix, and The Book of Genesis Illustrated. Crumb's work is often characterized by its sexual explicitness, violence, and social commentary. He has been called one of the most influential cartoonists of all time.