Board of Governors of the Federal Reserve System (U.S.), 1935-. "Insurance and Pension Fund Reserves, Unadjusted Net Flows," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "November 29, 1977," Z.1 Financial Accounts of the United States (1977-11-29) : 35-35. https://fraser.stlouisfed.org/title/93/item/69086/toc/478259 , accessed on April 18, 2024.