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. "June 1988," Federal Reserve Bulletin (June 1988) : 89-89. https://fraser.stlouisfed.org/title/62/item/20793/toc/241963 , accessed on April 23, 2024.