Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Index of Ocean Freight Rates," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "April 1922," Federal Reserve Bulletin (April 1922) : 86-86. https://fraser.stlouisfed.org/title/62/item/20535/toc/322656 , accessed on May 8, 2024.