Federal Reserve Bank of Chicago. "July 1955," Business Conditions (Federal Reserve Bank of Chicago) (July 1955). https://fraser.stlouisfed.org/title/5562/item/540109, accessed on March 28, 2024.
Federal Reserve Bank of Chicago. "July 1955," Business Conditions (Federal Reserve Bank of Chicago) (July 1955). https://fraser.stlouisfed.org/title/5562/item/540109, accessed on March 28, 2024.