Federal Reserve Bank of Chicago. "May 25, 1920," Business Conditions (Federal Reserve Bank of Chicago) (May 25, 1920). https://fraser.stlouisfed.org/title/5562/item/574414, accessed on May 2, 2024.
Federal Reserve Bank of Chicago. "May 25, 1920," Business Conditions (Federal Reserve Bank of Chicago) (May 25, 1920). https://fraser.stlouisfed.org/title/5562/item/574414, accessed on May 2, 2024.