Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Coal and Coke," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "February 1920," Federal Reserve Bulletin (February 1920) : 71-71. https://fraser.stlouisfed.org/title/62/item/20598/toc/267150 , accessed on May 4, 2024.