Conference Proceedings and Papers -- "Proceedings of the Coal Mining Institute of America", 1926

Conference Proceedings and Papers -- "Proceedings of the Coal Mining Institute of America", 1926, 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/164344 Accessed February 02, 2026.