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. "September 1963," Federal Reserve Bulletin (September 1963) : 114-114. https://fraser.stlouisfed.org/title/62/item/21345/toc/182420 , accessed on May 4, 2024.