Theodor Seuss Geisel, better known by his pen name, Dr. Seuss, was a famous American writer and cartoonist best known for his children's books, particularly The Cat in the Hat. ALS, one page, 5.5 x 8.5, fabulous Cat In The Hat letterhead, no date. Very nice letter to an aspiring writer. In part, “Thank you very much for letting me share your personal history and for letting me read Virtuoso In Wool and your philosophical article in the Maine Sunday Telegram…And may your success as a writer be even greater than that that you would have enjoyed as an attorney!” Signed at the conclusion in red artist’s pencil, “Dr. Seuss.” Accompanied by the original mailing envelope, addressed in Seuss’s hand. In fine condition. R&R COA.