Federal Reserve Bank of Chicago. "August 1, 1927, Volume 10, Number 8," Business Conditions (Federal Reserve Bank of Chicago) (August 1, 1927). https://fraser.stlouisfed.org/title/5562/item/574500, accessed on May 14, 2024.
Federal Reserve Bank of Chicago. "August 1, 1927, Volume 10, Number 8," Business Conditions (Federal Reserve Bank of Chicago) (August 1, 1927). https://fraser.stlouisfed.org/title/5562/item/574500, accessed on May 14, 2024.