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. "August 1958," Federal Reserve Bulletin (August 1958) : 93-93. https://fraser.stlouisfed.org/title/62/item/21284/toc/204916 , accessed on March 28, 2024.