<div class="description">
Proprietors of the Locks and Canals on the Merrimack River; Boott Manufacturing Company; Hawley, Monica E, transmitter; Ansteth, W Richard, photographer; Malone, Patrick M, historian</div>
Documentation compiled after 1968
<a rel="nofollow" class="external free" href="https://www.loc.gov/pictures/item/ma0546.photos.080587p">https://www.loc.gov/pictures/item/ma0546.photos.080587p</a>