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).
Stamped by the Test Room in Derby.
| Identifier | WestWitteringFiles\S\March1928-May1928\ Scan079 | |
| Date | 30th March 1928 | |
| [Illegible] LIMITED TEST ROOM, 30 MAR 1928 DERBY. | ||