Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Bond and Stock Yields," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "September 1969," Federal Reserve Bulletin (September 1969) : 118-118. https://fraser.stlouisfed.org/title/62/item/21417/toc/188134 , accessed on April 26, 2024.