"Whether you view your one-woman m nage as Doom or Adventure, you need a plan, if you are going to make the best of it." Thus begins Marjorie Hillis' archly funny, gently prescriptive manifesto for single women. Though it was 1936 when the Vogue editor first shared her wisdom with her fellow singletons, the tome has been passed lovingly through the generations, and is even more apt today than when it was first published. Hillis, a true bon...