Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Volume of Bankers' and Trade Acceptances Purchased, by Classes," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "September 1921," Federal Reserve Bulletin (September 1921) : 91-91. https://fraser.stlouisfed.org/title/62/item/20527/toc/392878 , accessed on April 25, 2024.