Romer, Wolfgang William,  George, III, King of Great Britain,  and George, IV, King of Great Britain.  "Fort William & Mary on Piscataqua River in the Province of New Hampshire on the Continent of America."  Drawing.  1705.  Norman B. Leventhal Map Center,  https://collections.leventhalmap.org/search/commonwealth:6108vv723 (accessed November 22, 2017).