Federal Reserve Bank of Chicago. "November 1960," Business Conditions (Federal Reserve Bank of Chicago) (November 1960). https://fraser.stlouisfed.org/title/5562/item/540173, accessed on April 25, 2024.
Federal Reserve Bank of Chicago. "November 1960," Business Conditions (Federal Reserve Bank of Chicago) (November 1960). https://fraser.stlouisfed.org/title/5562/item/540173, accessed on April 25, 2024.