"Does anyone know how hard it is to be that funny? . . . Read her book reviews. Read them now and see how good they are." --Fran Lebowitz When Dorothy Parker became a book critic for the New Yorker, in 1927, she was already a legendary wit, a much-quoted member of the Algonquin Round Table, and an arbiter of literary taste. In the year that she spent as a weekly reviewer, under the rubric "Constant Reader," she created what is...