Federal Reserve Bank of Chicago. "March 1, 1928, Volume 11, Number 3," Business Conditions (Federal Reserve Bank of Chicago) (March 1, 1928). https://fraser.stlouisfed.org/title/5562/item/574507, accessed on May 3, 2024.
Federal Reserve Bank of Chicago. "March 1, 1928, Volume 11, Number 3," Business Conditions (Federal Reserve Bank of Chicago) (March 1, 1928). https://fraser.stlouisfed.org/title/5562/item/574507, accessed on May 3, 2024.