Discover Clearfield County

Soil survey of Clearfield County, Pennsylvania

Geology and mineral resources of the southern half of the Penfield 15-minute quadrangle, Pennsylvania

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

Geology and mineral resources of the Philipsburg 7 1/2-minute quadrangle, Pennsylvania

History of Northwestern Pennsylvania

Caldwell's Illustrated, historical, combination atlas of Clearfield County, Pennsylvania

A method for determining post-depositional alteration in underclays and associated lithologies

Revised lithostratigraphic nomenclature of the Pottsville and Allegheny groups (Pennsylvanian)

Some genealogies and family records

Curwensville quadrangle

Clearfield County

Sediment loads, discharges, and yields in the East Branch Mahoning Creek Basin, Clearfield and Jefferson Counties, Pennsylvania, June 1979 through September 1981

Caldwell's illustrated historical, combination atlas of Clearfield County, Pennsylvania

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