Board of Governors of the Federal Reserve System (U.S.), 1935-. "Commitments of Life Insurance Companies for Income Property Mortgages," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "1970-1979," Annual Statistical Digest (March 1981) : 571-572. https://fraser.stlouisfed.org/title/7/item/23506/toc/190766 , accessed on March 28, 2024.