1. IOR/L/E/6/55, File 136 Reference (shelfmark): IOR/L/E/6/55, File 136 Title: File S&C 136/1881 - Payment of account for maps and materials supplied by the Survey Department of H M Office of Works for the use of the Madras Revenue Survey Collection Area: India Office Records and Private Papers Languages: English Date Range: Feb 1881 Extent: 2 folios