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. "June 1965," Federal Reserve Bulletin (June 1965) : 90-90. https://fraser.stlouisfed.org/title/62/item/21366/toc/327358 , accessed on May 4, 2024.