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).
Camshaft and tappets for the Phantom III model, referencing file 1113.
| Identifier | ExFiles\Box 96\1\ scan0403 | |
| Date | 18th August 1934 | |
| 361. Rm.{William Robotham - Chief Engineer} Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux}23/N.18.8.34 re. P.III camshaft + tappets see file 1113. | ||