It’s In the Bag: What Purses Reveal—and Conceal (HarperCollins; Hardcover; 128 pages; $19.95) by Winifred Gallagher looks at the history, lure and meaning behind “It” bags. You will also find out about fake bags and one-of-a-kind bags. Get ready to spend $1200 for next season’s must-have handbag.