Board of Governors of the Federal Reserve System (U.S.), 1935-. "Mortgage Debt Outstanding, by Type of Holder and Type of Property," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "1992," Annual Statistical Digest (December 1993) : 97-98. https://fraser.stlouisfed.org/title/7/item/23498/toc/332861 , accessed on March 29, 2024.