1. IOR/L/E/7/1560, File 3198 Reference (shelfmark): IOR/L/E/7/1560, File 3198 Title: File 3198 Note by the Director of the Central Indian Telegraph Department on the ``Indo'' Telegraph route and the through communication between London and Calcutta Collection Area: India Office Records and Private Papers Languages: English Date Range: 7 May 1929-7 Nov 1929 Extent: 1 file