1. IOR/Z/E/4/24/D425 Reference (shelfmark): IOR/Z/E/4/24/D425 Title: Dove, J.M. (Board of Customs, Salt and Opium), Enquiry by respecting power of Government to grant patent to protect a discovery in manufactures Collection Area: India Office Records and Private Papers Languages: English Date Range: 1853-1854 Extent: 1 entry