Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Mineral Productions, by Industries," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "1937," Annual Report of the Board of Governors of the Federal Reserve System (1937) : 180-180. https://fraser.stlouisfed.org/title/117/item/2495/toc/275489 , accessed on April 25, 2024.