Inset map : Great St. Simons Island; note lower left corner: N.B. a fathom is 6 feet; Martyn, Benjamin. An account showing the progress of the colony Georgia in America from its first establishment; Cumming-DeVorsey, 248; Probably the original for Seutter map in Samuel Urlsperger. Ausfuhrliche Nachrichten; See T.C. Lotter portion of Ebenezer map 1747; Publication: [London : s.n.]
DeRenne 1202-3
Georgia, hmap1741s4, Hargrett Rare Book and Manuscript Library, The University of Georgia Libraries.