Federal Reserve Bank of St. Louis. "Classification of Reserve Cities," Federal Reserve Bank of St. Louis Circulars (February 28, 1951). https://fraser.stlouisfed.org/title/958/item/37408, accessed on March 29, 2024.
Federal Reserve Bank of St. Louis. "Classification of Reserve Cities," Federal Reserve Bank of St. Louis Circulars (February 28, 1951). https://fraser.stlouisfed.org/title/958/item/37408, accessed on March 29, 2024.