By Gore Vidal. A revised edition of Vidal's novel of "the homosexual subculture in contemporary society." This isn't true crime per se -- although the cover copy is a dated misdemeanor, no doubt -- but this edition includes Vidal's essay "Sex and the Law," so I'm counting it.
For a 1965 paperback, this slim Signet is in pretty good trim -- mild fading to the spine, page toning, shelfwear, but sitting straight and sturdy.