1. IOR/F/4/1768/72676 Reference (shelfmark): IOR/F/4/1768/72676 Title: Scope & Content: Captain William Jacob of the Bombay Artillery is instructed to prepare a few light field telegraphs and a pocket telegraphic vocabulary for the use of the Sind Field Force Collection Area: India Office Records and Private Papers Languages: English Date Range: May 1838-Nov 1838 Extent: 1 file