Instruction to fit Phantom III type rear axle gears to a Wraith car.
| Identifier | ExFiles\Box 7\3\ X 602 Axle Rear-page52 | |
| Date | 28th March 1938 | |
| To HPC. 602. Rm {William Robotham - Chief Engineer} /Wym. {G. Harold Whyman - Experimental Manager} 9/JH.28.3.38. WRAITH CAR 28.G.VI. Will you please fit Phantom III type rear axle gears to the above car, with a correctly calibrated speedometer to suit. Rm {William Robotham - Chief Engineer} /Wym. {G. Harold Whyman - Experimental Manager} | ||
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).