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. "February 1968," Federal Reserve Bulletin (February 1968) : 190-190. https://fraser.stlouisfed.org/title/62/item/21398/toc/270969 , accessed on April 18, 2024.