Harrisburg, Williamsport, Erie, Scranton.

1886

Mitchell, Samuel Augustus

Harrisburg, Williamsport, Erie, Scranton.

1890

Mitchell, Samuel Augustus

Harrisburg, Williamsport, Erie, Scranton.

1884

Mitchell, Samuel Augustus Jr.

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

An Historical Map of York County, Pennsylvania.

1932

Tunis, Edwin, 1897-1973

Plate H. South Central Pennsylvania.

1871

Hopkins, G.M.

Plate J. Southeast Pennsylvania.

1871

Hopkins, G.M.

Planche XXIV. Vallee du Monocacy et Contrees Voisines.

1875

Le Comte de Paris

1:450k

A map of the territory served by Philadelphia Electric Company

1951

Philadelphia Electric Company

1:300k