Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Output, Capacity, and Capacity Utilization," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "October 1981," Federal Reserve Bulletin (October 1981) : 111-112. https://fraser.stlouisfed.org/title/62/item/20481/toc/138224 , accessed on March 29, 2024.