Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Mortgage Debt Outstanding," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "April 1986," Federal Reserve Bulletin (April 1986) : 114-114. https://fraser.stlouisfed.org/title/62/item/20767/toc/233125 , accessed on April 18, 2024.