Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Earnings and Expenses of Federal Reserve Banks," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "1931," Annual Report of the Board of Governors of the Federal Reserve System (1931) : 158-159. https://fraser.stlouisfed.org/title/117/item/2489/toc/306299 , accessed on June 10, 2023.