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. "May 1922," Federal Reserve Bulletin (May 1922) : 94-94. https://fraser.stlouisfed.org/title/62/item/20537/toc/103923 , accessed on April 17, 2024.