Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Annual Rates of Earnings on Purchased Paper, by Months," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "1921," Annual Report of the Board of Governors of the Federal Reserve System (1921) : 188-188. https://fraser.stlouisfed.org/title/117/item/2479/toc/177369 , accessed on July 8, 2024.