1. IOR/L/E/8/8581 Reference (shelfmark): IOR/L/E/8/8581 Title: F&E 10023/48 Pt.1A - Aviation: Blueprints accompanying the Completion report on the organisation of Karachi-Aden Air Route: Drawing No.EM113D General Arrangement of K3 Heenan & Froude Cooler. Scale 11/2'' = One Foot Collection Area: India Office Records and Private Papers Languages: English Date Range: c 1943 Extent: 1 foldout blueprint