1. IOR/F/4/1050/28957 Reference (shelfmark): IOR/F/4/1050/28957 Title: Scope & Content: The Surveyor General's Department in Calcutta purchases 50 copies of Captain John Henry Crisp's treatise on terrestrial longitudes - request of the Surveyor General [Major John Anthony Hodgson] to be sent a large telescope from England. Collection Area: India Office Records and Private Papers Languages: English Date Range: Oct 1824-Dec 1827 Extent: 1 file