Bastide, John Henry, approximately 1700-1770, Durell, Philip, -1766, Amherst, Jeffery Amherst, Baron, and Royal United Services Institute for Defence and Security Studies. "PLAN of the HARBOUR and FORTIFICATIONS of LOUISBOURG." Map. Louisbourg?: The Harbour Survey'd by Capt Phill Durell the Town & Fortifications by I. H. Bastide Enginr for Nova Scotia,, [1745]. Norman B. Leventhal Map & Education Center, https://collections.leventhalmap.org/search/commonwealth:hx11z022g (accessed April 25, 2024).