in addition to his comic strip work, dumas created numerous illustrations and cartoons. first selling them to the local "teen" magazine, he soon was published in magazines and newspapers like "the washington post", "the new yorker" and "the new york times". as a writer, he contributed essays to the "atlantic monthly", the "smithsonian", and "the connoisseur". he authored the children's book "rabbits rafferty", published in 1968, and his childhood memoir, "an afternoon in waterloo park", published in 1972.