A map of the Massachusetts counties as they appeared between 1912 (when Hyde Park was annexed by Boston) and 1938 (when the Quabbin Reservoir was created)
Original work by <a href="//commons.wikimedia.org/wiki/User:Awmcphee" title="User:Awmcphee">User:Awmcphee</a>. This version by <a href="//commons.wikimedia.org/w/index.php?title=User:WallAdhesion&amp;action=edit&amp;redlink=1" class="new" title="User:WallAdhesion (page does not exist)">User:WallAdhesion</a>.
2021-03-25
<p>This file was derived from: <a href="//commons.wikimedia.org/wiki/File:Massachusetts_county_map_1938_to_1947.svg" class="mw-redirect" title="File:Massachusetts county map 1938 to 1947.svg">Massachusetts county map 1938 to 1947.svg</a><br></p>
Redrawn county lines informed by <a rel="nofollow" class="external text" href="https://digital.newberry.org/ahcb/map/map.html#MA">The Newberry Library</a>