Federal Reserve Bank of Chicago. "August 30, 1930, Volume 13, Number 9," Business Conditions (Federal Reserve Bank of Chicago) (August 30, 1930). https://fraser.stlouisfed.org/title/5562/item/574536, accessed on May 1, 2024.
Federal Reserve Bank of Chicago. "August 30, 1930, Volume 13, Number 9," Business Conditions (Federal Reserve Bank of Chicago) (August 30, 1930). https://fraser.stlouisfed.org/title/5562/item/574536, accessed on May 1, 2024.