State Road Commission of West Virginia, Plan and Profile for Construction of State Road, Route No. Interstate 77, Williams District, Washington County, Ohio and Wood County, West Virginia, Williamstown-Marietta Bridge over the Ohio River, No. 229, Blueprints, 1965 June 7

State Road Commission of West Virginia, Plan and Profile for Construction of State Road, Route No. Interstate 77, Williams District, Washington County, Ohio and Wood County, West Virginia, Williamstown-Marietta Bridge over the Ohio River, No. 229, Blueprints, 1965 June 7, Box: 105, Item: 275. 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/155999 Accessed November 23, 2024.