Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Actual and Adjusted Values of Imports and Exports," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "December 1920," Federal Reserve Bulletin (December 1920) : 9-9. https://fraser.stlouisfed.org/title/62/item/20608/toc/344362 , accessed on April 24, 2024.