Federal Reserve Bank of Chicago. "June 29, 1937, Volume 20, Number 6," Business Conditions (Federal Reserve Bank of Chicago) (June 29, 1937). https://fraser.stlouisfed.org/title/5562/item/539893, accessed on April 25, 2024.
Federal Reserve Bank of Chicago. "June 29, 1937, Volume 20, Number 6," Business Conditions (Federal Reserve Bank of Chicago) (June 29, 1937). https://fraser.stlouisfed.org/title/5562/item/539893, accessed on April 25, 2024.