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. "April 1989," Federal Reserve Bulletin (April 1989) : 145-145. https://fraser.stlouisfed.org/title/62/item/20803/toc/70386 , accessed on April 26, 2024.