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. "November 1997," Federal Reserve Bulletin (November 1997) : 125-125. https://fraser.stlouisfed.org/title/62/item/20906/toc/276229 , accessed on April 18, 2024.