Federal Reserve Bank of Chicago. "April 1, 1929, Volume 12, Number 4," Business Conditions (Federal Reserve Bank of Chicago) (April 1, 1929). https://fraser.stlouisfed.org/title/5562/item/574520, accessed on April 19, 2024.
Federal Reserve Bank of Chicago. "April 1, 1929, Volume 12, Number 4," Business Conditions (Federal Reserve Bank of Chicago) (April 1, 1929). https://fraser.stlouisfed.org/title/5562/item/574520, accessed on April 19, 2024.