1. IOR/F/4/449/10778 Reference (shelfmark): IOR/F/4/449/10778 Title: Scope & Content: William Boyce's plan for establishing a semaphore telegraph system between Bombay and Calcutta (includes a section and elevation of the proposed signal towers, p 73). Collection Area: India Office Records and Private Papers Languages: English Date Range: Dec 1813-Apr 1814 Extent: 1 file