Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Major Changes in Benefit Schedules and Tax Rates, Social Security Funds," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "September 1978," Federal Reserve Bulletin (September 1978) : 19-19. https://fraser.stlouisfed.org/title/62/item/20445/toc/376883 , accessed on April 17, 2024.