Tonge, Winckworth,  George, III, King of Great Britain,  and George, IV, King of Great Britain.  "A DRAUGHT of the ISTHMUS which joyns Nova Scotia to the Continent with the Situation of the ENGLISH and FRENCH FORTS & the Adjacent BAYS and RIVERS."  Map.  1755.  Norman B. Leventhal Map & Education Center, (accessed March 18, 2019).