St. Nicholas, Pennsylvania, Central Breaker Engineering Drawings, Mechanical Equipment, 1930 May 29-1931 May 1

St. Nicholas, Pennsylvania, Central Breaker Engineering Drawings, Mechanical Equipment, 1930 May 29-1931 May 1, Box: 77, Item: 4. 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/155726 Accessed June 29, 2024.