1. IOR/L/MIL/5/381, Coll 57a Reference (shelfmark): IOR/L/MIL/5/381, Coll 57a Title: Military Department Special Collections: Collection 57a Scope & Content: Copy correspondence on the defects of tangent scales used in the Ordnance Depts in India Collection Area: India Office Records and Private Papers Languages: English Date Range: 1821 Extent: 1 file