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. "February 1922," Federal Reserve Bulletin (February 1922) : 108-108. https://fraser.stlouisfed.org/title/62/item/20533/toc/289154 , accessed on April 23, 2024.