Rankin, Samuel W. “Blue Earth County Agriculture – Hand Labor to Modern Machinery”, Paper, 1965. SMHC Manuscript Collection 1326, Southern Minnesota Historical Center, Memorial Library, Minnesota State University, Mankato.

Rankin, Samuel W. “Blue Earth County Agriculture – Hand Labor to Modern Machinery”, Paper, 1965. SMHC Manuscript Collection 1326, Southern Minnesota Historical Center, Memorial Library, Minnesota State University, Mankato. https://archivesspace.lib.mnsu.edu/public/repositories/4/resources/235 Accessed February 05, 2025.