1. IOR/L/PS/11/256, P 283/1925 Reference (shelfmark): IOR/L/PS/11/256, P 283/1925 Title: P 283/1925 Opium Convention: protocol regarding the enforcement of the Opium Convention Collection Area: India Office Records and Private Papers Languages: English Date Range: 23 Jan 1912-28 Jan 1925 Extent: 1 file