Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Mortgage Debt Outstanding on Nonfarm 1 to 4 Family Properties," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "October 1968," Federal Reserve Bulletin (October 1968) : 148-148. https://fraser.stlouisfed.org/title/62/item/21406/toc/255662 , accessed on March 29, 2024.