Conrad Buff

Mary Buff (April 10, 1890 – 1970) and Conrad Buff II (August 31, 1886 – March 11, 1975) were married creators of illustrated children's books. Between 1937 and 1968, they collaborated on both text and illustrations[a] to produce 14 books; four times they were a runner-up[a] for the Caldecott Medal or Newbery Medal. They had a profound impact on children's literature in the middle of the 20th century. https://en.wikipedia.org/wiki/Mary_and_Conrad_Buff