Hopkins, Griffith Morgan, Jr.,  Busch, Edward (Engraver),  and G.M. Hopkins & Co..  "Atlas of the county of Suffolk, Massachusetts : vol. 6th including the late city of Charlestown, now wards 20,21 and 22, city of Boston : from actual survey & official records."  Map.  1875.  Norman B. Leventhal Map & Education Center,  https://collections.leventhalmap.org/search/commonwealth:6h446s60f (accessed May 21, 2019).