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).
Modification record sheet, though the main content and list details are illegible.
| Identifier | ExFiles\Box 10\3\ 03-page090 | |
| Date | 28th May 1934 | |
| A.E.D./469 28.5.34 MODIFICATION SHEET 1 OF 1 [The rest of the document is illegible due to the poor quality of the image] | ||