The definitive guide to Salem's architecture, now available in a new edition.   Salem, Massachusetts is home to one of the largest extant collections of historical architecture in the entire nation. In this long-awaited new edition, noted architectural historian Bryant F. Tolles, Jr., presents an illustrated guide and walking tour covering more than three centuries of building styles and types. The book discusses over 350 buildings and complexes, with individual entries and photographs of nearly 230 structures. The material has been arranged according to eight tour districts, each accompanied by an introduction and a map.   A joy for the avid walker and arm-chair enthusiast alike, this book is an essential guide to the architecture of Salem from the early seventeenth century through the Georgian, Federal, Victorian, modern, and contemporary periods. Updated with new maps; color illustrations; a preface by Lynda Roscoe Hartigen, executive director and CEO of the Peabody Essex Museum; and a foreword by Steven Mallory, manager of historic structures and landscapes at the Peabody Essex Museum.