1. IOR/L/E/7/1170, File 165 Reference (shelfmark): IOR/L/E/7/1170, File 165 Title: File 165 Calcutta Engraving Office: visits of Mr T. Chorlton, Head Engraver, to certain map-making firms while on leave Collection Area: India Office Records and Private Papers Languages: English Date Range: 1 Dec 1923-1 Feb 1924 Extent: 1 file