Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Index Numbers of Wholesale Prices in United States - Federal Reserve Board," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "November 1920," Federal Reserve Bulletin (November 1920) : 94-94. https://fraser.stlouisfed.org/title/62/item/20607/toc/167918 , accessed on April 25, 2024.