Keulen, Gerard van.  "The coast of a part of North Carolina, South Carolina, Georgia and part of East Florida, with the bays, soundings, banks, roks, shoals, currents, and other nautical remarks, correctet and improved from the original materials and the latest actual surveys."  Map.  1784.  Norman B. Leventhal Map & Education Center,  https://collections.leventhalmap.org/search/commonwealth:z603vv02t (accessed November 29, 2020).