Street Maps of Philadelphia, Pennsylvania (2); Georgetown and the City of Washington, D.C. (2); Cincinnati, Ohio/Pittsburgh and Allegheny, Pennsylvania (2), undated

Street Maps of Philadelphia, Pennsylvania (2); Georgetown and the City of Washington, D.C. (2); Cincinnati, Ohio/Pittsburgh and Allegheny, Pennsylvania (2), undated, Box: 101, Item: 259. 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/155983 Accessed January 08, 2025.