Discover Elk County

Descriptions of four measured outcrop sections of Upper Devonian and Lower Mississippian strata in Warren and Elk Counties, Pennsylvania

Soil survey of Elk County, Kansas

Coal beds in Elk County, Pennsylvania

History of Northwestern Pennsylvania

A reconnaissance geochemical survey of the Clarion River Roadless Area, Allegheny National Forest, Elk County, Pennsylvania

1978 census of agriculture, preliminary report, Elk County, Pa

Soil survey of Cameron and Elk counties, Pennsylvania

Elk City gas field, Elk and Montgomery counties, Kansas

Environment of deposition of the Grenola limestone (Lower Permian) in southern Kansas

Report of the Committee on the Coal Lands in the County of Elk, Pennsylvania

Geological reports on the mineral & timber lands of D. Kingsbury in the counties of Clearfield, Elk, and Jefferson, State of Pennsylvania