Federal Reserve Bank of Chicago. "September 1, 1941," Business Conditions (Federal Reserve Bank of Chicago) (September 1, 1941). https://fraser.stlouisfed.org/title/5562/item/539943, accessed on May 5, 2024.
Federal Reserve Bank of Chicago. "September 1, 1941," Business Conditions (Federal Reserve Bank of Chicago) (September 1, 1941). https://fraser.stlouisfed.org/title/5562/item/539943, accessed on May 5, 2024.