Federal Reserve Bank of Chicago. "November 1966," Business Conditions (Federal Reserve Bank of Chicago) (November 1966). https://fraser.stlouisfed.org/title/5562/item/540245, accessed on April 18, 2024.
Federal Reserve Bank of Chicago. "November 1966," Business Conditions (Federal Reserve Bank of Chicago) (November 1966). https://fraser.stlouisfed.org/title/5562/item/540245, accessed on April 18, 2024.