Federal Reserve Bank of Chicago. "December 25, 1919," Business Conditions (Federal Reserve Bank of Chicago) (December 25, 1919). https://fraser.stlouisfed.org/title/5562/item/574409, accessed on April 23, 2024.
Federal Reserve Bank of Chicago. "December 25, 1919," Business Conditions (Federal Reserve Bank of Chicago) (December 25, 1919). https://fraser.stlouisfed.org/title/5562/item/574409, accessed on April 23, 2024.