Help ID 1960's children's picture book (non-Disney w/ Disneyland tie-in)

Disneyland’s It’s a Small World ride has a bunch of jungle animals with flowers and things painted on them in the Africa section, and a lone flower-painted kangaroo in the Australia section. I have a strong but vague memory that this comes from a picture book about a kid called Timothy that disguises these animals by painting them and putting them in a carousel or something. Does anyone know what book I mean? Picture.