Federal Reserve Bank of Chicago. "May 1, 1927, Volume 10, Number 5," Business Conditions (Federal Reserve Bank of Chicago) (May 1, 1927). https://fraser.stlouisfed.org/title/5562/item/574497, accessed on April 19, 2024.
Federal Reserve Bank of Chicago. "May 1, 1927, Volume 10, Number 5," Business Conditions (Federal Reserve Bank of Chicago) (May 1, 1927). https://fraser.stlouisfed.org/title/5562/item/574497, accessed on April 19, 2024.