During the course of a career stretching into nine decades, he won three Pulitzer Prizes for editorial cartooning (1942, 1954, 1979), shared a fourth Pulitzer Prize in 1973 for Public Service on Watergate, the Presidential Medal of Freedom (1994), the National Cartoonist Society Editorial Cartoon Award in 1957 and 1960, the Reuben Award in 1956, the Gold Key Award (the National Cartoonists Society Hall of Fame) in 1979, and numerous other honors.