Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "Group Index Numbers - Calcutta, India - Department of Statistics," in Board of Governors of the Federal Reserve System (U.S.), 1935- and Federal Reserve Board, 1914-1935. "November 1921," Federal Reserve Bulletin (November 1921) : 88-88. https://fraser.stlouisfed.org/title/62/item/20529/toc/397298 , accessed on April 18, 2024.