1. IOR/L/AG/46/48 Reference (shelfmark): IOR/L/AG/46/48 Title: Report on the Relative Advantage of each of two Gauges for State Railways in India Collection Area: India Office Records and Private Papers Languages: English Date Range: 1873 Extent: 1 volume
2. IOR/L/AG/46/48/1 Reference (shelfmark): IOR/L/AG/46/48/1 Title: Scope & Content: Extract of Minutes of Proceedings of Institution of Civil Engineers, London, Vol 35, Session 1872-73. Collection Area: India Office Records and Private Papers Languages: English Date Range: 1873 Extent: 1 volume