A map primarily depicting the route of the Boston &amp; Lowell Railroad.  It also shows the Lowell &amp; Lawrence and Salem &amp; Lowell railroads. The map is not dated, but several clues point to it being published around 1855:
<ul><li>The 1853-built Saugus Branch does not yet have the October 1855 connection to the Eastern</li>
<li>North Andover is separated from Andover, which took place in 1855</li>
<li>The Harvard Branch, operated 1849-55 is not shown</li>
<li>The Grand Junction segment to East Boston (opened 1852) is shown, but the western segment (opened 1855, though not operated 1857-69) is not</li>
<li>The 1854-built Horn Pond branch is not shown</li></ul>
Unknown author<span style="display: none;">Unknown author</span>
<a rel="nofollow" class="external free" href="http://archives.lib.state.ma.us/handle/2452/70898">http://archives.lib.state.ma.us/handle/2452/70898</a>