Graham, Robert L., 1926-2016. Oral History Interview, 2007. SMHC Manuscript Collection 1746, Southern Minnesota Historical Center, Memorial Library, Minnesota State University, Mankato.
Graham, Robert L., 1926-2016. Oral History Interview, 2007. SMHC Manuscript Collection 1746, Southern Minnesota Historical Center, Memorial Library, Minnesota State University, Mankato. https://archivesspace.lib.mnsu.edu/public/repositories/4/resources/41 Accessed November 14, 2024.