Folded Structure. Harrisburg, PA. Geologic Map of Harrisburg, PA.

1966

O'Brien, Emmett J

1:250k

Cumberland, Franklin, Adams counties.

1872

Gray, Ormando Willis; Walling, H. F.

1:300k

Schuylkill County.

1872

Gray, Ormando Willis; Walling, H. F.

1:300k

Plate H. South Central Pennsylvania.

1871

Hopkins, G.M.

Anthracite Coal Fields Of Pennsylvania

1878

Cochran, A.B.

1:158k

A New and accurate map of the province of Pennsylvania in North America, from the best authorities.

1780

The new war map of Maryland, part of Virginia & Pennsylvania

1863

Russell, B. B. (Benjamin B.)

1:520k

National Road from Washington to Lake Ontario

1828

Stansbury, A.J.

1:317k

Pennsylvania.

1924

Rand McNally and Company

1:539k

Pennsylvania (Eastern Part).

1948

Hammond, C.S.

1:585k