Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Index Numbers of Wholesale Prices of Principal Commodities," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "August 1920," Federal Reserve Bulletin (August 1920) : 84-84. https://fraser.stlouisfed.org/title/62/item/20604/toc/383020 , accessed on July 16, 2024.