Sonnabend, Leslie Clarence. Oral History Interview, 29 November and 3 December 1984. SMHC Manuscript Collection 1478, Southern Minnesota Historical Center, Memorial Library, Minnesota State University, Mankato.

Sonnabend, Leslie Clarence. Oral History Interview, 29 November and 3 December 1984. SMHC Manuscript Collection 1478, Southern Minnesota Historical Center, Memorial Library, Minnesota State University, Mankato. https://archivesspace.lib.mnsu.edu/public/repositories/4/resources/258 Accessed April 24, 2024.