1862
Fagan, L.
1958
Brandywine Valley Association
1777
Will, Johann Martin
1872
Gray, Ormando Willis; Walling, H. F.
1:300k
1935
C&GS
1:500k
1860
Beers, S.N.
1:63k
1872
Beers, F. W. (Frederick W.)
1:507k
1794
Morse, Jedidiah
1:1m
1872
Geological Survey of New Jersey
1:507k
1903
Rand McNally and Company
1:570k