1. IOR/L/E/7/1263, File 831 Reference (shelfmark): IOR/L/E/7/1263, File 831 Title: File 831 Opium: statement drawn up by the Home Office for the use of British subjects abroad regarding the action taken by the British Government under the Opium Convention Collection Area: India Office Records and Private Papers Languages: English Date Range: 12 Jan 1922-26 Feb 1923 Extent: 1 file