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 partial cross-section of a radiator and filter assembly.
| Identifier | ExFiles\Box 179b\2\ img181 | |
| Date | 28th November 1932 guessed | |
| Hs{Lord Ernest Hives - Chair} 783, SEC: HS.{Lord Ernest Hives - Chair} 782 | ||