Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Merchandise Exports and Imports," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "August 1931," Federal Reserve Bulletin (August 1931) : 20-20. https://fraser.stlouisfed.org/title/62/item/20715/toc/334507 , accessed on April 23, 2024.