 Although his work for Disney was still in the Rackham fairy-tale illustration style, after he left the studio he never painted that way again.From 1942 to 1962, Tenggren worked for Little Golden Books with illustrations for children's books such as "Tawny Scrawny Lion"; "Little Black Sambo" and "The Poky Little Puppy", which became the single all-time best-selling hardcover children's book in English; and "King Arthur and the Knights of the Round Table," Emma Gelders Sterne's retelling of the Arthurian Legend .During these years his production increased, as did the marketability of his name with a stream of Tenggren books.