George, III, King of Great Britain,  and George, IV, King of Great Britain.  "A Correct Plan of the Province of New Hampshire together with part of Hudsons River from Albany to Lake George and from thence thro' Lake Champlain to Mont Real: taken from a great number of exact attested Plans of particular parts of the Country & accurate observations of the Sea Coast. Also a General View of the River St Lawrence from Mont Real to Quebec."  Map.  1756.  Norman B. Leventhal Map & Education Center,  https://collections.leventhalmap.org/search/commonwealth:hx11z311k (accessed May 27, 2019).