1. IOR/V/27/761/73 Reference (shelfmark): IOR/V/27/761/73 Title: India. Posts and Telegraphs Department, General rules and departmental instructions for radio-telegraph stations in India, 5th edition, corrected up to 30 April 1939. Delhi, 1939 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1939 Extent: 1 volume