1. IOR/V/19/91 Reference (shelfmark): IOR/V/19/91 Title: Records of the Survey of India, Vol 21, I. Air-survey in the Irrawaddy Delta 1923-24. C.G. Lewis. II. Reconnaissance survey in Bhutan and South Tibet 1922. H.R.C. Meade Collection Area: India Office Records and Private Papers Languages: English Date Range: 1922-1924 Extent: 1 volume