Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Market Groupings, Seasonally Adjusted," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "July 1964," Federal Reserve Bulletin (July 1964) : 86-86. https://fraser.stlouisfed.org/title/62/item/21355/toc/38340 , accessed on June 23, 2024.