Dr Suess is of course, your favorite children's book author. But before he made your childhood nighttime magic with repeated readings of "Cat in the Hat" and "Green Eggs and Ham, he was an ad agency illustrator. In honor of what would be his 111th birthday, check out some of the ads below (featured from 1927-1940s). The art is a precursors to the awesome illustrations he used in those books we love.
Happy Birthday Dr Suess!