Federal Reserve Bank of Chicago. "June 1973," Business Conditions (Federal Reserve Bank of Chicago) (June 1973). https://fraser.stlouisfed.org/title/5562/item/540324, accessed on April 18, 2024.
Federal Reserve Bank of Chicago. "June 1973," Business Conditions (Federal Reserve Bank of Chicago) (June 1973). https://fraser.stlouisfed.org/title/5562/item/540324, accessed on April 18, 2024.