Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Official Index Number of Retail Prices of Foodstuffs, Fuel and Lighting," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "February 1921," Federal Reserve Bulletin (February 1921) : 80-80. https://fraser.stlouisfed.org/title/62/item/20520/toc/377149 , accessed on March 28, 2024.