ɪn ɐdˈɪʃən tə tʃˈɪldɹənz bˈʊks, hiː kəntˈɪnjuːd wˈɜːkɪŋ æz ɐ fɹˈiːlæns ɡɹˈæfɪk dɪzˈaɪnɚ ænd ˈɪləstɹˌeɪɾɚ.
In addition to children's books, he continued working as a freelance graphic designer and illustrator.