Board of Governors of the Federal Reserve System (U.S.), 1935-. "Insurance and Pension Fund Reserves, Seasonally Adjusted Annual Rates," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "February 10, 1978," Z.1 Financial Accounts of the United States (1978-02-10) : 36-36. https://fraser.stlouisfed.org/title/93/item/69133/toc/478385 , accessed on April 26, 2024.