Question: What is the publishing year of this children's book written and illustrated by Dr. Seuss, in which the featured characted was also part of a book "Horton Hatches the Egg"?
Sentence (from "Horton Hears a Who!"): is a children's book written and illustrated by Theodor Seuss Geisel under the pen name Dr. Seuss and was published in 1954 by Random House.
Relevant evidence: Yes