Frederic G. Melcher
Melcher proposed the Caldecott Medal in 1937 to honor children's picture books. Named for British illustrator Randolph Caldecott, the medal is presented annually for the "most distinguished picture book for children".
Helen Sewell
Helen Sewell (June 27, 1896 – February 24, 1957) was an American illustrator and writer of children's books. She was a runner-up for the 1955 Caldecott Medal as illustrator of "The Thanksgiving Story" by Alice Dalgliesh and she illustrated several novels that were runners-up for the Newbery Medal.
Some of her papers were donated to the University of Minnesota.