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. "April 1961," Federal Reserve Bulletin (April 1961) : 82-83. https://fraser.stlouisfed.org/title/62/item/21316/toc/141863 , accessed on April 25, 2024.