Related Clues:
- Sam-I-Am's creator
- ''Hop on Pop'' author
- The Lorax's creator
- Creator of Yertle the Turtle
- Doctor ____ (childrens' author)
- 'The Butter Battle Book' writer
- Doctor of letters?
- Dr. of verse
- ''Dr.'' who created the Grinch
- Creator of 32-Across
- Dr. that wrote "The Cat in the Hat"
- 'The Butter Battle Book' author
- Popular author most of whose work is written in anapestic tetrameter
- ''Doctor'' who wrote ''Green Eggs and Ham''
- Author Theodor __ Geisel