Federal Reserve Bank of Chicago. "October 1, 1928, Volume 11, Number 10," Business Conditions (Federal Reserve Bank of Chicago) (October 1, 1928). https://fraser.stlouisfed.org/title/5562/item/574514, accessed on April 23, 2024.
Federal Reserve Bank of Chicago. "October 1, 1928, Volume 11, Number 10," Business Conditions (Federal Reserve Bank of Chicago) (October 1, 1928). https://fraser.stlouisfed.org/title/5562/item/574514, accessed on April 23, 2024.