Federal Reserve Bank of Chicago. "April 28, 1937, Volume 20, Number 4," Business Conditions (Federal Reserve Bank of Chicago) (April 28, 1937). https://fraser.stlouisfed.org/title/5562/item/539891, accessed on April 28, 2024.
Federal Reserve Bank of Chicago. "April 28, 1937, Volume 20, Number 4," Business Conditions (Federal Reserve Bank of Chicago) (April 28, 1937). https://fraser.stlouisfed.org/title/5562/item/539891, accessed on April 28, 2024.