1. IOR/L/E/6/44, File 705 Reference (shelfmark): IOR/L/E/6/44, File 705 Title: File S&C 705/1880 - Letter from J B N Hennessey, Survey of India, to the Assistant Secretary of the Geographical Department, India Office, requesting the acknowledgment of despatches of daily solar negatives and silver prints numbered 1 to 18 Collection Area: India Office Records and Private Papers Languages: English Date Range: May 1880 Extent: 1 file (1 folio)