Peek-a-Boo...Who?

Simms Taback (February 13, 1932 – December 25, 2011) was an American writer, graphic artist, and illustrator of more than 35 books. He won the 2000 Caldecott Medal for U.S. picture book illustration, recognizing Joseph Had a Little Overcoat, and was a runner-up in 1998 for There Was an Old Lady Who Swallowed a Fly.