Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Freight-Car Loadings, by Classes," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "May 1936," Federal Reserve Bulletin (May 1936) : 64-64. https://fraser.stlouisfed.org/title/62/item/20730/toc/50630 , accessed on May 7, 2024.