Gazetteer/Almanac
Boston, Massachusetts, Physical Description (Hayward)
John Hayward, Gazetteer of the United States of America... (Philadelphia: James L. Gihon, 1854), 287-300.
The peninsula on which Boston proper is built is connected with the main land of Roxbury on the S., from which it extends, in a direction a little E. of N., about 3 miles, having an average breadth of about a mile. The isthmus, or Neck, as it is commonly called, is something over a mile in length, and is nearly all included within the limits of Boston. It was originally quite narrow, and so low that parts of it were frequently overflowed by the highest courses of the tides. The waters of the harbor, flowing up into the bay of Roxbury, on the E.