Map of the Oil Region of Pennsylvania.

1865

Townsend & Dale

1:158k

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

1872

Gray, Ormando Willis; Walling, H. F.

1:300k

Niagara, Erie, Chautaugua, Cattaraugus, Orleans, Genesee, Wyoming, Allegheny, Monroe, and Livingston Counties, New York.

1870

Asher & Adams

1:400k

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

Ye Territory of rich diversified resources served by Niagara Power Service

1929

B. N. & E. Power Corp.

Pennsylvania (western portion).

1889

Cram, George

1:700k

Pennsylvania.

1886

Mitchell, Samuel Augustus

1:900k

Pennsylvania -- Geology

1960

Williams and Heintz Map Corporation

1:250k