1. IOR/L/E/9/731 Reference (shelfmark): IOR/L/E/9/731 Title: Collection 114/5 Opium and Drugs: Policy and Production - List of factories authorised to manufacture dangerous drugs under Article 20 of the 1931 Drug Convention Collection Area: India Office Records and Private Papers Languages: English Date Range: Jun 1929-Nov 1945 Extent: 1 file