The Cat in the Hat of all time. As of 2007, more than 10 million copies of "The Cat in the Hat" have been printed, and it has been translated into more than 12 different languages, including Latin, under the title "Cattus Petasatus". In 2007, on the occasion of the book's fiftieth anniversary, Random House released "The Annotated Cat: Under the Hats of Seuss and His Cats", which includes both "The Cat in the Hat" and its sequel, with annotations and an introduction by Philip Nel. The book was published to immediate critical acclaim. Some reviewers praised the book as an exciting way to learn
The Cat in the Hat "My Hassle With the First Grade Language", he also told a story of the "three excruciatingly painful weeks" in which he worked on a story about a King Cat and a Queen Cat. However, "queen" was not on the word list, nor did his first grade nephew, Norval, recognize it. So Geisel returned to the work but could then think only of words that started with the letter "q", which did not appear in any word on the list. He then had a similar fascination with the letter "z", which also did not appear in any word on the list.