Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Industrial Production - Indexes and Gross Value," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "December 1978," Federal Reserve Bulletin (December 1978) : 124-125. https://fraser.stlouisfed.org/title/62/item/20448/toc/108119 , accessed on March 29, 2024.