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).
Confirming the passing of the cast breather for the Phantom III.
| Identifier | ExFiles\Box 93\2\ scan0169 | |
| Date | 12th June 1936 | |
| To E.{Mr Elliott - Chief Engineer} X306 Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}11/KW.12.6.36. We have passed the cast breather for the Ph.III. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||