Ashland

1953

1:24k

Ashland

1947

1:24k

Ashland

1953

1:24k

Ashland

1947

1:24k

Ashland

1953

1:24k

Ashland

1976

1:24k

Ashland

1947

1:24k

Ashland

1953

1:24k

Ashland

1953

1:24k

Composite Map:Mahanoy, Shenandoah and New Boston basins, Schuylkill County, Centralia, Girardville and Mahanoy basins, Mount Carmel, Centralia, Coal Ridge or Montana, Germantown, and Mahanoy basins, Schuylkill, Columbia and Northumberland Counties.

1884

Geological Survey of Pennsylvania

1:10k