Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Principal Assets and Liabilities of Federal Business-Type Activities," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "May 1957," Federal Reserve Bulletin (May 1957) : 50-50. https://fraser.stlouisfed.org/title/62/item/21269/toc/168873 , accessed on April 18, 2024.