From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Concerning cost comparisons and potential savings.
| Identifier | ExFiles\Box 167\4\ img170 | |
| Date | 14th July 1937 guessed | |
| WST:- 6112. ① What are Cost Comparisons ② Should like to try one. Rm.{William Robotham - Chief Engineer}. 8/- saving. | ||