Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Purchases and Sales by Foreigners of Long-Term Securities, by Type," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "August 1957," Federal Reserve Bulletin (August 1957) : 123-123. https://fraser.stlouisfed.org/title/62/item/21272/toc/99647 , accessed on April 25, 2024.