Index Numbers of Wholesale Prices in the United States for Principal Classes of Commodities
Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Index Numbers of Wholesale Prices in the United States for Principal Classes of Commodities," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "May 1920," Federal Reserve Bulletin (May 1920) : 72-72. https://fraser.stlouisfed.org/title/62/item/20601/toc/41272 , accessed on April 18, 2024.