Writing with equal insight about New York City, Hollywood, and the small-town Pennsylvania world where he grew up, John O'Hara cultivated an unsentimental and often unsparing realism, aiming, he said, "to record the way people talked and thought and felt . . . with complete honesty." Praised by contemporaries including Ernest Hemingway and Dorothy Parker, he wrote about sex, drinking, and social class with a frankness ahead of its time. The fiction...