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).
Circular photomicrograph showing the microstructure of a material.
| Identifier | ExFiles\Box 120\1\ scan0324 | |
| Date | 11th January 1936 guessed | |
| ", | ||