Alice and Martin Provensen

Alice Rose Provensen (''née'' Twitchell; August 14, 1918 – April 23, 2018) and Martin Provensen (July 10, 1916 – March 27, 1987) were an American couple who illustrated more than 40 children's books together, 19 of which they also wrote and edited. According to Alice, "we were a true collaboration. Martin and I really were one artist." Provided by Wikipedia