1. Lithostratigraphy of upper Ordovician strata exposed in Kentucky Author/Creator: Weir, Gordon W. 1922-2011, (Gordon Whitney), author Publication/Creation: Washington : Department of the Interior, U.S. Geological Survey, 1984 Resource Type: Book Access & Availability: Loading
2. Borden Formation (Mississippian) in south and southeast-central Kentucky Author/Creator: Weir, Gordon W. 1922-2011, (Gordon Whitney), author Publication/Creation: [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1968 Resource Type: Book Access & Availability: Loading
3. Calloway Creek limestone and Ashlock and Drakes formations (Upper Ordovician) in south-central Kentucky Author/Creator: Weir, Gordon W. 1922-2011, (Gordon Whitney), author Publication/Creation: [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1965 Resource Type: Book Access & Availability: Loading
4. Clays Ferry formation (Ordovician) -- a new map unit in south-central Kentucky Author/Creator: Weir, Gordon W. 1922-2011, (Gordon Whitney), author Publication/Creation: [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1965 Resource Type: Book Access & Availability: Loading