Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Mortgage Loans Held by Banks," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "July 1957," Federal Reserve Bulletin (July 1957) : 55-55. https://fraser.stlouisfed.org/title/62/item/21271/toc/292980 , accessed on April 24, 2024.