 The book led directly to the creation of Beginner Books , a publishing house centered on producing books like The Cat in the Hat for beginning readers . According to Judith and Neil Morgan , when the book caught the attention of Phyllis Cerf , the wife of Geisel 's publisher , Bennett Cerf , she arranged for a meeting with Geisel , where the two agreed to create Beginner Books . Geisel became the president and editor , and the Cat in the Hat served as their mascot . Geisel 's wife , Helen , was made third partner . Random House served as distributor , until 1960 , when Random House purchased Beginner Books . Geisel wrote multiple books 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 . Go ! ( 1961 ) , and The Big Honey Hunt ( 1962 ) . 
