Henry Winterfeld (born April 9, 1901, in Hamburg, Germany; died January 27, 1990, in Machias, Maine), published under the pseudonym Manfred Michael, was a German writer and artist famous for his children's and young adult novels. He emigrated to the U.S. in 1940 and lived there until his death. Henry Winterfeld was married to Elsie Winterfeld, who was a designer of toys and created a patented three-headed doll.