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).
Triptyque Papers for the car designated 9-PK.
| Identifier | ExFiles\Box 76\1\ scan0232 | |
| Date | 28th June 1924 | |
| X677 BP. from Hs.{Lord Ernest Hives - Chair} Hs{Lord Ernest Hives - Chair}3/LG28.6.24. 9-PK CAR. Herewith Triptyque Papers in connection with the above car. Hs.{Lord Ernest Hives - Chair} | ||