R. Crumb Greeting Card: "Head Comix"Rare as hen's teeth vintage Robert Crumb greeting cards! Colorful and iconic, some of Crumb's greatest Underground images are beautifully emblazoned on these vintage novelty cards. Stunning and stimulating brain and eye candy for any occasion! This card features the classic Mr. Natural image featured on the cover of Head Comix. Color by Kim Deitch. Cards are in excellent condition packaged in a plastic sleeve. Printed in 1980. Supplies limited.