Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Average Operating Ratios of Member Banks, by Size Groups, All Member Banks," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "August 1938," Federal Reserve Bulletin (August 1938) : 46-46. https://fraser.stlouisfed.org/title/62/item/21004/toc/337989 , accessed on April 17, 2024.