(1962) Mellops Go Spelunking (1963), (Rodzina Mellopsów w jaskini) Flat Stanley (1964) – ilustracje Tomi Ungerer, tekst Jeff Brown One, Two, Where's My Shoe? (1964) Beastly Boys and Ghastly Girls (1964) – ilustracje Tomi Ungerer, opracowanie William Cole Oh, What Nonsense! (1966) – ilustracje Tomi Ungerer, redakcja William Cole Orlando, the Brave Vulture (1966) What's Good for a 4-Year-Old? (1967) – ilustracje Tomi Ungerer, tekst William Cole Moon Man (Der Mondmann, Diogenes Verlag AG Zürich, 1966), polskie wydanie „Księżycolud”, przekład Michał Rusinek, Format, Wrocław 2011 Zeralda's Ogre (1967) Ask Me a Question (1968) The Sorcerer’s Apprentice (1969) – text by Barbara Hazen Oh, How Silly! (1970) – art by Tomi Ungerer, edited by William Cole The Hat (1970) I Am Papa Snap and These Are My Favorite No Such Stories (1971) The Beast of Monsieur Racine (1971) The Hut (1972) Oh, That's Ridiculous! (1972) – art by Tomi Ungerer, edited by William Cole No Kiss for Mother (1973) Allumette;