Hamilton, Joseph -- The history and development of the telephone system of the University of Maryland, College Park, Maryland

Hamilton, Joseph -- The history and development of the telephone system of the University of Maryland, College Park, Maryland, c1b2415b-dd87-4802-9f97-c8658e3a2d3d. Special Collections and University Archives. https://archives.lib.umd.edu//repositories/2/digital_objects/1480 Accessed October 15, 2024.