Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Prices in the United States," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "May 1921," Federal Reserve Bulletin (May 1921) : 7-7. https://fraser.stlouisfed.org/title/62/item/20523/toc/260845 , accessed on April 25, 2024.