Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Output of Locomotives and Cars," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "August 1920," Federal Reserve Bulletin (August 1920) : 98-98. https://fraser.stlouisfed.org/title/62/item/20604/toc/383049 , accessed on May 4, 2024.