Federal Reserve Bank of Chicago. "February 1, 1927, Volume 10, Number 2," Business Conditions (Federal Reserve Bank of Chicago) (February 1, 1927). https://fraser.stlouisfed.org/title/5562/item/574494, accessed on April 28, 2024.
Federal Reserve Bank of Chicago. "February 1, 1927, Volume 10, Number 2," Business Conditions (Federal Reserve Bank of Chicago) (February 1, 1927). https://fraser.stlouisfed.org/title/5562/item/574494, accessed on April 28, 2024.