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).
Chassis number, test date, and material costs for fitting a new part.
| Identifier | ExFiles\Box 27\1\ Scan306 | |
| Date | 15th April 1929 | |
| The number of the chassis on which the new part will be fitted. El 1a 'O' Date when chassis will be handed to test. 15.4.29. Cost of scrapped material, if any. NIL. CMO Ref. 3419 | ||