- Thompson, William Beverhout, 1804 or 5-1867
- Digital Commonwealth
- Boston Public Library
- United States Topographical Bureau?
Relief shown by hachures. In upper right corner: "No. 3. Oriented with north to the upper left. Drawn by Lt. W.B. Thompson ; etched by Lt. John Earley ; surveyed by Fredk. Searle, J.W.A. Smith, W.B. Thompson, under the direction of Major P.H. Perrault ; W.H.
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