At once seductive, informative, and ephemeral, a book jacket is designed to evokeand promotethe contents of a book. During the 1920s, '30s, and '40s, book jackets emerged as one of America's most vital graphic media, showcasing the talent of America's most exciting illustrators and designers. "Jackets Required: An Illustrated History of American Book Jacket Design, 1920-1950" features a striking array of book jackets created for a wide range of subjects and formats, including novels, humor books, romances, mysteries, biographies, and history books, among others.