1946
Jean, Sally
1902
Gannett, Henry; Wilson, H. M.; US Coast and Geodetic Survey; Geological Survey of New Jersey
1:63k
1857
Rogers, Henry Darwin
1:317k
1828
Tanner, Henry S.
1:127k
1891
Appleton, D. & Co.
1:42k
1860
Beers, S.N.
1:63k
1958
Brandywine Valley Association
1872
Gray, Ormando Willis; Walling, H. F.
1:300k
1935
C&GS
1:500k
1956
Shell Oil Company