A booklet of papers presented to the E.I. du Pont de Nemours & Company Engineering Department Development Engineering Division Engineering Research Laboratory conference on design and materials for super-pressure service. This includes papers entitled 'History of High-Pressure Design in the du Pont Company' by F.E. Klutey, 'Design of High-Pressure Cylinders' by W.R.D. Manning, 'The Future of High-Pressure Design' by P.G. Reynolds, @Metallurgical Aspects of Stress Analysis' by E.M. Mahla and 'Stress-Analysis Techniques' by C.B. Cameron.