Federal Reserve Bank of Chicago. "November 1969," Business Conditions (Federal Reserve Bank of Chicago) (November 1969). https://fraser.stlouisfed.org/title/5562/item/540281, accessed on May 4, 2024.
Federal Reserve Bank of Chicago. "November 1969," Business Conditions (Federal Reserve Bank of Chicago) (November 1969). https://fraser.stlouisfed.org/title/5562/item/540281, accessed on May 4, 2024.