Federal Reserve Bank of Chicago. "June 1955," Business Conditions (Federal Reserve Bank of Chicago) (June 1955). https://fraser.stlouisfed.org/title/5562/item/540108, accessed on April 28, 2024.
Federal Reserve Bank of Chicago. "June 1955," Business Conditions (Federal Reserve Bank of Chicago) (June 1955). https://fraser.stlouisfed.org/title/5562/item/540108, accessed on April 28, 2024.