Abstract Robert J. Cashman earned Master of Arts (1930) and Ph.D. (1935) degrees in physics from Northwestern University. He joined the Northwestern faculty as assistant professor of physics, becoming professor in 1947. Cashman's research interests centered on photovoltaic, photoemissive and photoconductive cells. His papers fill 19 boxes and span the years 1929-1988. The papers are organized in six main categories: biographical materials, education files, correspondence, teaching files, research and...