Erdahl, Arlen Ingolf, 1931 - 2023. Collection, 1963 – 1970. SMHC Collection 0146, Southern Minnesota Historical Center, Memorial Library, Minnesota State University, Mankato.

Erdahl, Arlen Ingolf, 1931 - 2023. Collection, 1963 – 1970. SMHC Collection 0146, Southern Minnesota Historical Center, Memorial Library, Minnesota State University, Mankato. https://archivesspace.lib.mnsu.edu/public/repositories/4/resources/634 Accessed November 15, 2024.