Field, Roger M., 1934-. Oral History Interview, 2007. SMHC Manuscript Collection 1750, Southern Minnesota Historical Center, Memorial Library, Minnesota State University, Mankato.
Field, Roger M., 1934-. Oral History Interview, 2007. SMHC Manuscript Collection 1750, Southern Minnesota Historical Center, Memorial Library, Minnesota State University, Mankato. https://archivesspace.lib.mnsu.edu/public/repositories/4/resources/49 Accessed November 22, 2024.