Theodor Seuss Geisel, (1904–1991) 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 signed “Ted,” one page, 7.25 x 10.5, Dr. Seuss letterhead, no date. Letter to a friend, written during the making of the animated version of Horton Hears a Who! for CBS. In part: “Sorry I couldn’t get to the party. But I just got back from Africa & am up to my neck. Thanks for the clips on Copenhagen & the local court scene. You’re doing great! And I’d love to see you IF you give me a phone call at least 2 week[s] in advance…Trouble is, I’m living mostly up in Hollywood next month, where, as you know, I’m making a CBS special. So, phone before you come! If we can’t connect this month, we surely will later on when the heat simmers down.” Accompanied by the original mailing envelope, postmarked November 19, 1970. In fine condition, with envelope stapled to letter, pencil notations to top edges and a couple spots of light toning. R&R COA.