1. IOR/Z/E/4/20/S830 Reference (shelfmark): IOR/Z/E/4/20/S830 Title: Surveys, Trigonometrical, Sikhim of, refusal of Rajah to allow Surveyor General to proceed into his territory for purposes of Collection Area: India Office Records and Private Papers Languages: English Date Range: 1849-1850 Extent: 1 entry