Historic American Engineering Record: C&O Canal, Lock #49, Delaware & Hudson Aqueduct, Pennsylvania, Maps [3 sheets], 1969

Historic American Engineering Record: C&O Canal, Lock #49, Delaware & Hudson Aqueduct, Pennsylvania, Maps [3 sheets], 1969, Map Case: 11, Drawer: 7, Folder: 10. 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/188165 Accessed November 26, 2024.