1. IOR/Z/E/4/19/B1832 Reference (shelfmark): IOR/Z/E/4/19/B1832 Title: Bullion, O'Shaughnessy's experiments for extracting gold from silver bullion and for refining by means of saltpetre Collection Area: India Office Records and Private Papers Languages: English Date Range: 1846-1849 Extent: 1 entry