Federal Reserve Bank of Chicago. "February 1, 1929, Volume 12, Number 2," Business Conditions (Federal Reserve Bank of Chicago) (February 1, 1929). https://fraser.stlouisfed.org/title/5562/item/574518, accessed on March 28, 2024.
Federal Reserve Bank of Chicago. "February 1, 1929, Volume 12, Number 2," Business Conditions (Federal Reserve Bank of Chicago) (February 1, 1929). https://fraser.stlouisfed.org/title/5562/item/574518, accessed on March 28, 2024.