Federal Reserve Bank of Chicago. "June 26, 1920," Business Conditions (Federal Reserve Bank of Chicago) (June 26, 1920). https://fraser.stlouisfed.org/title/5562/item/574415, accessed on April 23, 2024.
Federal Reserve Bank of Chicago. "June 26, 1920," Business Conditions (Federal Reserve Bank of Chicago) (June 26, 1920). https://fraser.stlouisfed.org/title/5562/item/574415, accessed on April 23, 2024.