Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Wholesale Prices, by Groups of Commodities," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "May 1958," Federal Reserve Bulletin (May 1958) : 81-82. https://fraser.stlouisfed.org/title/62/item/21281/toc/251839 , accessed on April 23, 2024.