Map of the Centre Oil Region From Oil City To Parkers Landing.

1871

Wrigley, Henry E.

1:20k

Map of Venango County Oil Regions.

1865

Hunt, John P.

1:88k

Jefferson, Clarion, Indiana, Armstrong counties.

1872

Gray, Ormando Willis; Walling, H. F.

1:300k

Erie, Crawford, Venango counties.

1872

Gray, Ormando Willis; Walling, H. F.

1:300k

Warren, McKean, Potter, Forest, Elk, Cameron counties.

1872

Gray, Ormando Willis; Walling, H. F.

1:300k

Pennsylvania (western part).

1948

Hammond, C.S.

1:585k

Toledo - Cleveland. Cleveland - New York.

1939

White, Ruth Taylor

Pennsylvania, Western Section.

1924

Rand McNally and Company

1:539k

Pennsylvania (western portion).

1889

Cram, George

1:700k

Pittsburgh.

1924

Rand McNally and Company

1:380k