A biography of the book that inspired Prince to adopt purple as his signature color, Pulitzer-Prize-winning author Richard Powers to become a writer, and countless other creative people to become artists.A primer on the art and design of children's picture books, renowned children's literature scholar Philip Nel takes the reader on an illustrated tour through all that made Crockett Johnson's Harold and the Purple Crayon an astonishing success: from Harold's clear line, Johnson's carefully planned improvisation, the Garamond typeface, the real