Federal Reserve Bank of Chicago. "April 25, 1920," Business Conditions (Federal Reserve Bank of Chicago) (April 25, 1920). https://fraser.stlouisfed.org/title/5562/item/574413, accessed on May 18, 2024.
Federal Reserve Bank of Chicago. "April 25, 1920," Business Conditions (Federal Reserve Bank of Chicago) (April 25, 1920). https://fraser.stlouisfed.org/title/5562/item/574413, accessed on May 18, 2024.