Rand McNally and Company. "Final 1938 Edition : South Dakota-Wyoming," Rand McNally Bankers Directory (September 1938). https://fraser.stlouisfed.org/title/105/item/598429/content/pdf/rmbd_1938final_07_southdakota, accessed on April 18, 2024.
Rand McNally and Company. "Final 1938 Edition : South Dakota-Wyoming," Rand McNally Bankers Directory (September 1938). https://fraser.stlouisfed.org/title/105/item/598429/content/pdf/rmbd_1938final_07_southdakota, accessed on April 18, 2024.