Federal Reserve Bank of Chicago. "August 31, 1921, Volume 4, Number 8," Business Conditions (Federal Reserve Bank of Chicago) (August 31, 1921). https://fraser.stlouisfed.org/title/5562/item/574428, accessed on April 18, 2024.
Federal Reserve Bank of Chicago. "August 31, 1921, Volume 4, Number 8," Business Conditions (Federal Reserve Bank of Chicago) (August 31, 1921). https://fraser.stlouisfed.org/title/5562/item/574428, accessed on April 18, 2024.