1. IOR/V/27/420/126 Reference (shelfmark): IOR/V/27/420/126 Title: Hunter, J de Graaff, Report on the geodetic work of the Survey of India, for the period 1924-27 [and 1927-30]. Dehra Dun, 1927-1930 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1927-1930 Extent: 1 volume