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. "September 1956," Federal Reserve Bulletin (September 1956) : 66-67. https://fraser.stlouisfed.org/title/62/item/21261/toc/365347 , accessed on April 25, 2024.