Mercer County -- Geology -- Map 2, 1925, Folder: 7. Robert W. Craigo, Collector, Geological, Topographical, and Other Maps of West Virginia, A&M 2622. West Virginia and Regional History Center.
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Mercer County -- Geology -- Map 2, 1925, Folder: 7. Robert W. Craigo, Collector, Geological, Topographical, and Other Maps of West Virginia, A&M 2622. West Virginia and Regional History Center. https://archives.lib.wvu.edu/repositories/2/archival_objects/170534 Accessed June 17, 2024.