Roger’s signature design was colourful, vibrant, as well as graphic, and also he had a strong sense of structure as well as style. Over the years, he highlighted as well as composed over forty books, consisting of series that featured Petunia the silly goose and also Veronica the conspicuous hippo, folktales such as the Three Sneezes and also The Crocodile in the Tree, as well as idea books such as A for the Ark.
Roger also produced pictures for over 140 publications by various other writers. For earlier works see components 1-3.