Federal Reserve Bank of Chicago. "August 31, 1931, Volume 14, Number 9," Business Conditions (Federal Reserve Bank of Chicago) (August 31, 1931). https://fraser.stlouisfed.org/title/5562/item/539823, accessed on April 24, 2024.
Federal Reserve Bank of Chicago. "August 31, 1931, Volume 14, Number 9," Business Conditions (Federal Reserve Bank of Chicago) (August 31, 1931). https://fraser.stlouisfed.org/title/5562/item/539823, accessed on April 24, 2024.