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. "January 1922," Federal Reserve Bulletin (January 1922) : 87-87. https://fraser.stlouisfed.org/title/62/item/20532/toc/190269 , accessed on May 3, 2024.