Federal Reserve Bank of Chicago. Research Department and Federal Reserve Bank of Chicago. "The Great Lakes Border and Economy, No. 179a," Chicago Fed Letter (July 2002). https://fraser.stlouisfed.org/title/5287/item/535943, accessed on May 7, 2024.
Federal Reserve Bank of Chicago. Research Department and Federal Reserve Bank of Chicago. "The Great Lakes Border and Economy, No. 179a," Chicago Fed Letter (July 2002). https://fraser.stlouisfed.org/title/5287/item/535943, accessed on May 7, 2024.