Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Statist Index Number of Wholesale Prices," 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) : 71-71. https://fraser.stlouisfed.org/title/62/item/20520/toc/377137 , accessed on March 29, 2024.