Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Wholesale Prices: Summary," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "January 1968," Federal Reserve Bulletin (January 1968) : 159-159. https://fraser.stlouisfed.org/title/62/item/21397/toc/36489 , accessed on April 23, 2024.