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. "March 1960," Federal Reserve Bulletin (March 1960) : 62-62. https://fraser.stlouisfed.org/title/62/item/21303/toc/162920 , accessed on March 19, 2024.