Series 9. Addendum of 2020, Engineering drawings, maps, other miscellaneous, 1909-2003

Includes mostly engineering drawings, such as schematics, blueprints, floorplans, and maps for a variety of engineering projects throughout West Virginia and Maryland. These materials are from a variety of architects and engineers, most often Paul D. Marshall and Associates, but all pertain to projects involving Emory L. Kemp or the IHTIA. Also includes a poster titled "the Bridge at St.Louis" and a panoramic photograph of Alderson Bridge in Alderson, WV