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. "March 1967," Federal Reserve Bulletin (March 1967) : 132-132. https://fraser.stlouisfed.org/title/62/item/21387/toc/347117 , accessed on April 25, 2024.