Warren County, Pennsylvania, By Andrew H. Ludlow, 1838.

1838

Ludlow, Andrew H.

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

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

Pennsylvania.

1890

Mitchell, Samuel Augustus

1:900k

Pennsylvania.

1882

Mitchell, Samuel Augustus Jr.

1:900k

Pennsylvania.

1880

Mitchell, Samuel Augustus

1:1m