U.S Geological Survey -- Miscellaneous Publications (documents mining in various states) (5" of material, unfoldered), 1918–1953

U.S Geological Survey -- Miscellaneous Publications (documents mining in various states) (5" of material, unfoldered), 1918–1953, Box: 4. J.J. Rutledge Technical Writings on Coal Mining, A&M 3312. West Virginia and Regional History Center. https://archives.lib.wvu.edu/repositories/2/archival_objects/164340 Accessed February 02, 2026.