Marc Penfield is known as an historian and researcher, as well as an oustanding astrologer, who has traveled extensively, visiting most of the locales included in this volume. His delineations are candid and forthright. Marc garnered the cooperation of libraries, cities and universities to make this book the most thorough and comprehensive work on mundane astrology ever printed. In this, the second edition of Marc's definitive work on mundane, or political, astrology, he has added numerous cities as well as Puerto Rico and Nunavut, a new Canadian province. State charts are calculated for their capitals at the time of admission, not for Washington, D.C. as is the custom in other books. Whenever possible, only founding dates are used for cities; incorporation dates were utilized only as a last resort, when the information was either insufficient or vague. The introduction contains a brief outline on how the planets, houses and aspects are interpreted in mundane astrology. There also is a short lesson on how you can compare your chart to any given in this book through a unique system of synastry.For those planning to vacation or retire, this section is vitally important and should not be glossed over. Horoscopes of the USA and Canada eliminates the necessity for astrologers to rely only on lunation and ingress charts to predict the future of nations. The charts illustrated in this book should open new horizons to study what Ptolemy thought was the most important branch of astrology one could learn. This valuable reference work is one that no astrologer should be without. Marc is also the author of An Astrological Who's Who, The Nadi System of Rectification, 2001: The Penfield Data Collection, Bon Voyage, Stars Over England and Solar Returns in Your Face.