1. IOR/V/23/117, Vol 2 Pt 7 No 33 Reference (shelfmark): IOR/V/23/117, Vol 2 Pt 7 No 33 Title: Elliptical tunnel bridge at Seonee, 1849. Agra: Secundra Orphan Press, 1852 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1852 Extent: pp. 70-71, plan