Dr. Seuss had quite a few D's and F's - but that didn't slow him down. His "5000 fingers" film was a flop. His attempts to produce works for an adult audienc

Dr. Seuss had quite a few D's and F's - but that didn't slow him down. His "5000 fingers" film was a flop. His attempts to produce works for an adult audience went nowhere. But he never, ever quit. And he had extremely high standards. As a result, some of his funniest and most creative work was seen only in newspaper ads and trade shows. He also had a run of amazing editorial cartoons during WWII (Dr. Seuss Goes to War is a great collection of them.)