Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Index Numbers of Wholesale Prices (All Commodities)," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "July 1920," Federal Reserve Bulletin (July 1920) : 52-52. https://fraser.stlouisfed.org/title/62/item/20603/toc/102274 , accessed on April 25, 2024.