Washington State Highway Department: Bridges 1920 to 1931, Special Collections, Linderman Library, Lehigh University, Bethlehem, PA

Washington State Highway Department: Bridges 1920 to 1931, Special Collections, Linderman Library, Lehigh University, Bethlehem, PA https://archivesspace.lib.lehigh.edu//repositories/3/resources/170 Accessed December 11, 2023.