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 1925," Federal Reserve Bulletin (April 1925) : 47-47. https://fraser.stlouisfed.org/title/62/item/20571/toc/273370 , accessed on May 7, 2024.