Documents related to new strut theory, housed in the original file:

- Six page report entitled ‘The application of the new strut theory to the design of the structure of R.100’

- Five page extract from ‘Report on the materials of construction used in aircraft & aircraft engines – Appendix 1 – Strut formulae’

- 20 page document entitled ‘A new strut theory with applications to the calculation of the strength of open braced girders in compression under simple and complex conditions of loading’ by J E Temple

- 16 pages of blueprint figures