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. "April 1919," Federal Reserve Bulletin (April 1919) : 86-86. https://fraser.stlouisfed.org/title/62/item/20588/toc/391698 , accessed on March 28, 2024.