1853 Outline map of the great northern route from Boston and New York to the Mississippi, by B. W. Thayer &amp; Co, from the Digital Commonwealth - commonwealth cj82kp01x. (<a rel="nofollow" class="external free" href="https://www.digitalcommonwealth.org/search/commonwealth:cj82kp01x">https://www.digitalcommonwealth.org/search/commonwealth:cj82kp01x</a>)
B. W. Thayer &amp; Co
Digital Commonwealth