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. "April 1922," Federal Reserve Bulletin (April 1922) : 73-73. https://fraser.stlouisfed.org/title/62/item/20535/toc/322636 , accessed on April 26, 2024.