1. 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
2. Calloway Creek limestone and Ashlock and Drakes Formations (Upper Ordovician) in south-central Kentucky Author/Creator: Weir, Gordon W. 1922-2011. (Gordon Whitney) Publication/Creation: Washington : U.S. Govt. Print. Off, 1965 Resource Type: Book Is Part Of: U.S. Geological Survey bulletin, no. 1223-1224. Access & Availability: Loading
3. Calymenid and other Ordovician trilobites from Kentucky and Ohio Author/Creator: Ross, Reuben James, 1918- Publication/Creation: Washington : U.S. Govt. Print. Off, 1967 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 581-584. 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
5. Clays Ferry Formation (Ordovician) : a new map unit in south-central Kentucky Author/Creator: Weir, Gordon W. 1922-2011. (Gordon Whitney) Publication/Creation: Washington : U.S. Govt. Print. Off, 1965 Resource Type: Book Is Part Of: U.S. Geological Survey bulletin, no. 1223-1224. Access & Availability: Loading
6. Contributions to the Ordovician paleontology of Kentucky and nearby states Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1979 Resource Type: Book Access & Availability: Loading
7. Contributions to the Ordovician paleontology of Kentucky and nearby states Publication/Creation: For sale by the Supt. of Docs., U.S. Govt. Print. Off Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 1066 A-N. Access & Availability: Loading