Kensington

1960

1:24k

Kensington

1960

1:24k

Kensington

1960

1:24k

Kensington

1994

1:24k

Salineville

1905

1:63k

East Liverpool

1986

1:100k

East Liverpool

1986

1:100k

Map of Beaver County : Showing outcrops of the Pittsburgh, upper Freeport, and Kittanning coals.

1876

Geological Survey of Pennsylvania

1:125k

Ashtabula, Geauga, Lake, Mahoning, Portage and Trumbull counties.

1872

Walling, H. F.

1:300k

Carroll, Columbiana, Harrison, Jefferson, Stark and Tuscarawas counties.

1872

Walling, H. F.

1:300k