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 1980," Federal Reserve Bulletin (March 1980) : 147-147. https://fraser.stlouisfed.org/title/62/item/20463/toc/76822 , accessed on April 25, 2024.