1. IOR/L/E/7/1230, File 1536 Reference (shelfmark): IOR/L/E/7/1230, File 1536 Title: File 1536 Combined leave to Mr C T Teychenne, Assistant Superintendent, Geological Survey of India Collection Area: India Office Records and Private Papers Languages: English Date Range: 15 Sep 1921-22 Nov 1921 Extent: 1 file