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 1924," Federal Reserve Bulletin (April 1924) : 59-59. https://fraser.stlouisfed.org/title/62/item/20559/toc/236442 , accessed on March 29, 2024.