Engineering Drawings, Traces, Maps -- Allegheny National Forest; IHTIA, USGS [50 sheets], undated

Engineering Drawings, Traces, Maps -- Allegheny National Forest; IHTIA, USGS [50 sheets], undated, Map Case: 11, Drawer: 3, Folder: 6. Institute for the History of Technology and Industrial Archaeology Records, A&M 3936. West Virginia and Regional History Center. https://archives.lib.wvu.edu/repositories/2/archival_objects/188114 Accessed November 26, 2024.