Board of Governors of the Federal Reserve System (U.S.), 1935-. "State and Local Government Securities, Seasonally Adjusted Annual Rates," in Board of Governors of the Federal Reserve System (U.S.), 1935-. "August 20, 1980," Z.1 Financial Accounts of the United States (1980-08-20) : 42-42. https://fraser.stlouisfed.org/title/93/item/69063/toc/480382 , accessed on May 4, 2024.