Question: Who wrote the 40th and final title in the regular series of Oz books, illustrated by Dick Martin in 1963?
Sentence (from "Dick Martin (artist)"): Dickinson P. Martin (June 29, 1927 – February 14, 1990) was an artist from Chicago who illustrated a number of books related to The Oz books series, most notably, "Merry Go Round in Oz" (1963), the 40th and final title in the regular series, as well as many other children's books.
Relevant evidence: Yes