Paper of Anthony Sevant relating to his work for De Havilland Propeller and Hawker Siddeley Dynamics including as part of the Blue Streak programme. This includes specification documents relating to the use of Blue Streak as part of the Europa satellite launch vehicle. It also contains press cuttings and Hawker Siddeley newsletters relating to aerospace subjects in general. Beyond this there are techincal drawings, engineering standards and data sheets relating to Anthony's work for companies including Harris Lebus and Seben Hart.