Marc Simont (1915–2013) illustrated nearly a hundred books, among them James Thurber’s The 13 Clocks and a 1990 edition of Thurber’s Many Moons. He worked with such authors as Marjorie Weinman Sharmat (on the Nate the Great series) and Margaret Wise Brown and won both a Caldecott Honor and a Caldecott Medal for his illustrations of children’s books.