1. IOR/L/E/8/8586 Reference (shelfmark): IOR/L/E/8/8586 Title: F&E 10023/48 Pt.1A - Aviation: Blueprints accompanying the Completion report on the organisation of Karachi-Aden Air Route: Drawing No.EM115A Cochran Patent Vertical Multitubular Boiler No.7758. Horizontal Flue Tubes. Scale 1'' = One Foot Collection Area: India Office Records and Private Papers Languages: English Date Range: c 1943 Extent: 1 foldout blueprint