Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Movement of Crude Petroleum in United States," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "May 1919," Federal Reserve Bulletin (May 1919) : 87-87. https://fraser.stlouisfed.org/title/62/item/20589/toc/384759 , accessed on March 28, 2024.