St. Louis Union Depot, Missouri, Blueprint, Pittsburgh Bridge Company, Pittsburgh, Pennsylvania, undated

St. Louis Union Depot, Missouri, Blueprint, Pittsburgh Bridge Company, Pittsburgh, Pennsylvania, undated, Box: 91, Item: 141. 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/155863 Accessed November 23, 2024.