THE BOUNDARIES OF ARLINGTON 1791    1801    184 6     1870    1875    191 5    1929    1936&n bsp;   1946    1966 FOREWORD TO THE SECOND EDITION This collection of documentary references to the boundaries of Arlington County was first published in 1957. This new edition contains revisions made in the light of fuller knowledge, and brings the story up-to-date by taking account of the change in the common boundary with the City of Alexandria which went into effect on January 1, 1966. This