George, III, King of Great Britain, George, IV, King of Great Britain, and approximately 1700-1770 John Henry Bastide. "PLAN of the TOWN and FORTIFICATIONS of LOUISBOURG." Map. 1745. Norman B. Leventhal Map & Education Center, https://collections.leventhalmap.org/search/commonwealth:hx11z523s (accessed April 25, 2024).