1. IOR/L/E/7/1537, File 1441 Reference (shelfmark): IOR/L/E/7/1537, File 1441 Title: File 1441 Deputation and investigations of Mr W Gaskell into the problem of making up excise opium in tablet form Collection Area: India Office Records and Private Papers Languages: English Date Range: 16 Feb 1928-11 Aug 1931 Extent: 1 file