1873
Map of the Stat
Walling, H. F.;
1147.003
1871
Geol. Massachus
Gray, Ormando W
1154.001
1872
Penn. geologica
Lesley, J. P. (
1155.001
Map of Maryland
Tyson, Philip T
2239.001
1870
Geological map,
Campbell, R.A.;
2483.089
Geological map
Newberry, John
2710.002