1. Upper Ordovician formations in the Maysville area, Kentucky Author/Creator: Peck, John H. Publication/Creation: Washington : U.S. Govt. Print. Off, 1966 Resource Type: Book Is Part Of: U.S. Geological Survey bulletin, no.1243-1244. Access & Availability: Loading
2. Upper Ordovician formations in the Maysville area, Kentucky Author/Creator: Peck, John H., 1937- author Publication/Creation: [Washington, D.C.] : United States Department of the Interior, Geological Survey, 1966 Resource Type: Book Access & Availability: Loading