An envelope containing draft copies of a paper entitled 'Bursting Pressure as the Basis for Cylinder Design' including some with handwritten notes and corrections. Also included are diagrams, handwritten notes, a copy of a note from W.R.D. Manning to Richard H. Gallagher, Professor of Civil Engineering dated 21st March 1978 and a copy of a paper entitled 'Fatigue Characteristics of Open-End Thick-Walled Cylinders Under Cyclic Internal Pressure' by T.E. Davidson, R. Eisenstadt and A.N. Reiner.