Zahn, Thomas R.; Associates (Winter 2009–2010). "Historic Context Study"(PDF). Mankato, Minnesota: Mankato Heritage Preservation Commission. pp. 6–8. Archived from the original(PDF) on October 9, 2011. Retrieved July 3, 2010.
Zahn, Thomas R.; Associates (Winter 2009–2010). "Historic Context Study"(PDF). Mankato, Minnesota: Mankato Heritage Preservation Commission. pp. 6–8. Archived from the original(PDF) on October 9, 2011. Retrieved July 3, 2010.