Federal Reserve Bank of Chicago. "July 1, 1929, Volume 12, Number 7," Business Conditions (Federal Reserve Bank of Chicago) (July 1, 1929). https://fraser.stlouisfed.org/title/5562/item/574523, accessed on May 8, 2024.
Federal Reserve Bank of Chicago. "July 1, 1929, Volume 12, Number 7," Business Conditions (Federal Reserve Bank of Chicago) (July 1, 1929). https://fraser.stlouisfed.org/title/5562/item/574523, accessed on May 8, 2024.