Book excerpt: In the first study of its kind, Michele H. Bogart explores in unprecedented detail the world of commercial art, its illustrators, publishers, art directors, photographers, and painters. She maps out the border between art and commerce and expands our picture of artistic culture and practice in the twentieth century with unexpected pairings of Norman Rockwell and Andy Warhol, J.C. Leyendecker and Georgia O'Keeffe, the Metropolitan Museum of Art and Pepsi-Cola, the avant garde and the Famous Artists Schools, Inc.