Federal Reserve Bank of Chicago. "December 1963," Business Conditions (Federal Reserve Bank of Chicago) (December 1963). https://fraser.stlouisfed.org/title/5562/item/540210, accessed on April 25, 2024.
Federal Reserve Bank of Chicago. "December 1963," Business Conditions (Federal Reserve Bank of Chicago) (December 1963). https://fraser.stlouisfed.org/title/5562/item/540210, accessed on April 25, 2024.