Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "July 20, 1939," H.4.1 Factors Affecting Reserve Balances of Depository Institutions and Condition Statement of Federal Reserve Banks (1939-07-20). https://fraser.stlouisfed.org/title/83/item/65970, accessed on March 19, 2024.