Historic American Engineering Record No. MD-127, National Road Recording Project for (1) Clarysville Bridge, Allegany County, Maryland, Blueprints and (2) Little Crossing's Bridge, Garrett County, Maryland, Blueprints and (3) St. Nicholas Central Breaker, 1932, Mahoning, Schuykill County, Pennsylvania, Blueprints [12 sheets total], 1994 July-2000 June

Historic American Engineering Record No. MD-127, National Road Recording Project for (1) Clarysville Bridge, Allegany County, Maryland, Blueprints and (2) Little Crossing's Bridge, Garrett County, Maryland, Blueprints and (3) St. Nicholas Central Breaker, 1932, Mahoning, Schuykill County, Pennsylvania, Blueprints [12 sheets total], 1994 July-2000 June, Map Case: 11, Drawer: 8, Folder: 3. 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/188171 Accessed November 26, 2024.