"Richard Margolis - Bridges" Exhibit, Poster, Symbols of Progress, Philadelphia, Pennsylvania, 1993 June 30

"Richard Margolis - Bridges" Exhibit, Poster, Symbols of Progress, Philadelphia, Pennsylvania, 1993 June 30, Box: 98, Item: 227. 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/155951 Accessed November 22, 2024.