Bob Tupper is another classic cartoonist that I had never heard of until joining the amazing Cartoon Retro, a website created by Shane Glines which showcases rare artwork from artists of the 30s, 40s, 50s & 60s.
Cartoon Retro has over one hundred more scans of Tupper's work and I highly recommend signing up for a membership. They have tons of artists that you've never even heard of.. and they all kick insane amounts of ass. And if you are a young budding cartoonist, then you have no choice but to sign up. I can't even begin to tell you how much Cartoon Retro has helped me improve my drawing skill.