1. IOR/L/E/6/53, File 39 Reference (shelfmark): IOR/L/E/6/53, File 39 Title: File S&C 39/1881 - Chefoo Convention: proposed five year arrangement at Shanghai as to the Sikkim levy on opium Collection Area: India Office Records and Private Papers Languages: English Date Range: Jan 1881 Extent: 1 file