Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Gross National Product," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "May 1975," Federal Reserve Bulletin (May 1975) : 132-132. https://fraser.stlouisfed.org/title/62/item/21485/toc/328703 , accessed on April 20, 2024.