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).
Telegram to Waller at Chateauroux instructing to run with a new head when it becomes available.
| Identifier | ExFiles\Box 97\4\ scan0114 | |
| Date | 4th November 1938 | |
| 400 b 4.11.38. WALLER VINGT-ET-UN CHATEAUROUX. PLEASE RUN WITH NEW HEAD WHEN AVAILABLE. ROBOTHAM. | ||