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).
Blueprint showing a louvered vent and a side view of a domed component, possibly a lamp.
| Identifier | ExFiles\Box 119\3\ scan0170 | |
| Date | 18th August 1931 guessed | |
| Nº 27 | ||