1. IOR/L/PS/20/E60 Reference (shelfmark): IOR/L/PS/20/E60 Title: [Photocopy of] Report on the survey operations in the districts in the neighbourhood of Aden during 1891-92. By Cpt R A Wahab, RE, Deputy Superintendent, Survey of India Calcutta: [Survey of India Dept], 1893 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1893 Extent: 35pp map