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. "August 2003," Federal Reserve Bulletin (August 2003) : 90-91. https://fraser.stlouisfed.org/title/62/item/20975/toc/144128 , accessed on April 24, 2024.