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. "March 2003," Federal Reserve Bulletin (March 2003) : 93-93. https://fraser.stlouisfed.org/title/62/item/20970/toc/87171 , accessed on April 23, 2024.