Dr. Seuss Working on the Main Character for his New Book (1957)
The famous children’s story was written and illustrated by Dr. Seuss and has since been adapted as a Christmas special twice. First in 1966 as an animated TV movie and again in 2000 as a live-action feature film. [source]
How the Grinch Stole Christmas! was the first book Dr. Seuss published after The Cat in the Hat.