Winter, Mark R. Papers, 1977. SMHC Manuscript Collection 1372, Southern Minnesota Historical Center, Memorial Library, Minnesota State University, Mankato.

Winter, Mark R. Papers, 1977. SMHC Manuscript Collection 1372, Southern Minnesota Historical Center, Memorial Library, Minnesota State University, Mankato. https://archivesspace.lib.mnsu.edu/public/repositories/4/resources/400 Accessed April 26, 2024.