Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "All Banks in the United States - Number of Banks," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "December 1939," Federal Reserve Bulletin (December 1939) : 69-69. https://fraser.stlouisfed.org/title/62/item/21020/toc/216986 , accessed on April 19, 2024.