1. IOR/F/4/1314/52441 Reference (shelfmark): IOR/F/4/1314/52441 Title: Scope & Content: Further papers regarding the Great Trigonometrical Survey - general statement of progress - arrears of computation - establishment questions - appointment of Joshua De Penning as Head Computer, etc. Collection Area: India Office Records and Private Papers Languages: English Date Range: Apr 1831-Mar 1832 Extent: 1 file