Theatre

TheatreOnetime-slapsie Maxie Shulman is slapsie no more. His Rally Round the Flag, Boys! (Doubleday, $3.50), though a funny book, funnier than many being written these days, does not read like a product of the same antic pen that gave us Sleep till Noon and Barefoot Boy with Cheek, those flights of fantastic fooling that made the name of Shulman synonymous with split sides. Rally is milder, much milder: slick, safe-and-sane, earth-bound, commercial, Good Housekeeping humor, eminently suitable fo...