Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "National Summary of Business Conditions," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "July 1930," Federal Reserve Bulletin (July 1930) : 26-27. https://fraser.stlouisfed.org/title/62/item/20703/toc/121799 , accessed on April 26, 2024.