The Philadelphia and Reading Coal and Iron Company, Central Breaker, Flow Diagram, Coal, Bone, Sand and Refuse, Locust Summit, Pennsylvania, Locust Summit District, Blueprints, February 1930

The Philadelphia and Reading Coal and Iron Company, Central Breaker, Flow Diagram, Coal, Bone, Sand and Refuse, Locust Summit, Pennsylvania, Locust Summit District, Blueprints, February 1930, Box: 134, Item: 350. 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/156074 Accessed November 23, 2024.