The Oil Regions of Pennsylvania; with maps and charts of Oil Creek, Allegheny River, etc

1864

GILLELEN, F. M. L.

Jefferson, Clarion, Indiana, Armstrong counties.

1872

Gray, Ormando Willis; Walling, H. F.

1:300k

Pittsburgh.

1924

Rand McNally and Company

1:380k

Toledo - Cleveland. Cleveland - New York.

1939

White, Ruth Taylor

Pennsylvania, Western Section.

1924

Rand McNally and Company

1:539k

Pennsylvania.

1903

Rand McNally and Company

1:530k

Pennsylvania (western portion).

1889

Cram, George

1:700k

Industries Of Western Pennsylvania

1884

Lee, Alex. Y.

1:111k

Atlas Ameriquain Septentrional Contenant, mapa ze strany: [19]

1778

Chez le Rouge, Ingenieur Géographe du Roi, Rue des grands Augustins

Pennsylvania.

1886

Mitchell, Samuel Augustus

1:900k