The Cat in the Hat (TV special) stopped working on Seuss projects also. DePatie and Freleng were credited together as executive producers, while Jones was credited as producer with Seuss (under his actual name). For the next three Dr. Seuss animation specials, Freleng and Seuss (again using his real name) were credited as producers, although separately. DePatie–Freleng animated a new Cat in the Hat Productions logo for this special, which would be used in the next three specials. The pace and rhyming sequences of several of the songs (particularly "Calculatus Eliminatus") led many to believe that they were composed by Sherman, since they closely resemble his earlier
The Cat in the Hat for the series, including "The Cat in the Hat Comes Back" (1958), "Green Eggs and Ham" (1960), "Hop on Pop" (1963), and "Fox in Socks" (1965). He initially used word lists of limited vocabularies to create these books, as he had with "The Cat in the Hat", but moved away from the lists as he came to believe "that a child could learn any amount of words if fed them slowly and if the books were amply illustrated". Other authors also contributed notable books to the series, including "A Fly Went By" (1958), "Sam and the Firefly" (1958), "Go, Dog.