Focusing on the Author:
* Theodor Seuss Geisel: Beyond the Cat in the Hat
* The Man Behind the Lorax: A Life of Dr. Seuss
* Dr. Seuss: A Life in Rhyme and Reason
* The World of Dr. Seuss: From Political Cartoonist to Children's Author
Focusing on the Impact:
* The Seuss Effect: How One Man Changed the World of Children's Literature
* The Legacy of Dr. Seuss: A Celebration of Imagination and Creativity
* Seussical Wonders: The Enduring Impact of Dr. Seuss's Work
* A World of Seuss: The Impact of a Literary Icon
Playing with Humor:
* Dr. Seuss: The Life and Times of a Wonderful, Horrible, and Hilarious Man
* Don't Worry, Be Happy (and Read Dr. Seuss): A Biography
* Green Eggs and Ham and Me: A Personal Look at Dr. Seuss
* Seussical Secrets: Unmasking the Man Behind the Hat
Other Options:
* The Cat, the Hat, and the Man: A Biography of Dr. Seuss
* Beyond the Words: The Life and Art of Dr. Seuss
* Theodor Seuss Geisel: A Life in Pictures and Words
Ultimately, the best title will depend on the specific focus and tone of your biography. Choose something that is catchy, informative, and reflects the essence of Dr. Seuss's life and legacy.