Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Utility Output of Electricity and Gas," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "December 1959," Federal Reserve Bulletin (December 1959) : 84-84. https://fraser.stlouisfed.org/title/62/item/21300/toc/143072 , accessed on March 28, 2024.