Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "National Income," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "April 1968," Federal Reserve Bulletin (April 1968) : 121-121. https://fraser.stlouisfed.org/title/62/item/21400/toc/419371 , accessed on April 19, 2024.