Wortman, Allen L., 1935-. Oral History Interview and Collection, 2017. SMHC Collection 0261, Southern Minnesota Historical Center, Memorial Library, Minnesota State University, Mankato.

Wortman, Allen L., 1935-. Oral History Interview and Collection, 2017. SMHC Collection 0261, Southern Minnesota Historical Center, Memorial Library, Minnesota State University, Mankato. https://archivesspace.lib.mnsu.edu/public/repositories/4/resources/113 Accessed January 15, 2025.