Federal Reserve Bank of Chicago. "December 1938, Volume 21, Number 12," Business Conditions (Federal Reserve Bank of Chicago) (December 1938). https://fraser.stlouisfed.org/title/5562/item/539911, accessed on April 19, 2024.
Federal Reserve Bank of Chicago. "December 1938, Volume 21, Number 12," Business Conditions (Federal Reserve Bank of Chicago) (December 1938). https://fraser.stlouisfed.org/title/5562/item/539911, accessed on April 19, 2024.