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).
From Grylls arranging a visit to Mason Instrument in Cambridge.
| Identifier | ExFiles\Box 138\2\ scan0096 | |
| Date | 12th March 1937 | |
| L163. Anbry 12.3.37. MASON INSTRUMENT CAMBRIDGE. WILL CALL CARLYLE ROAD THREE THIRTY SATURDAY. GRYLLS. | ||