1. IOR/L/E/6/42, File 522 Reference (shelfmark): IOR/L/E/6/42, File 522 Title: File S&C 522/1880 - Letter from the Superintendent, Geological Survey of India, to the Assistant Under-Secretary of State for India, dated 7th April 1880, advising of the satisfactory progress of the work entrusted to Dr Waagen Collection Area: India Office Records and Private Papers Languages: English Date Range: Apr 1880-May 1880 Extent: 1 file (2 folios)