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).
Pencil sketch of a dual exhaust manifold assembly.
| Identifier | WestWitteringFiles\Q\April1927-June1927\ 125 | |
| Date | 25th June 1927 | |
| HYDECK WILKINSON 1981 C.R. 25/6/27 | ||