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).
Page with a purple ink date stamp from the Test Room.
| Identifier | ExFiles\Box 24\5\ Scan358 | |
| Date | 14th October 1930 | |
| ROYCE, LIMITED TEST ROOM, 14 OCT 1930 COPY | ||