Federal Reserve Bank of Chicago. "January 1, 1918," Business Conditions (Federal Reserve Bank of Chicago) (January 1, 1918). https://fraser.stlouisfed.org/title/5562/item/574386, accessed on March 28, 2024.
Federal Reserve Bank of Chicago. "January 1, 1918," Business Conditions (Federal Reserve Bank of Chicago) (January 1, 1918). https://fraser.stlouisfed.org/title/5562/item/574386, accessed on March 28, 2024.