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).
Blueprint of a modification to a Phantom III cross steering tube joint to prevent rotation of the upper pad.
| Identifier | ExFiles\Box 95\1\ scan0352 | |
| Date | 16th July 1936 | |
| S/M BRONZE. MODIFICATION TO PH III CROSS STEERING TUBE JOINT TO PREVENT ROTATION OF UPPER PAD. RM{William Robotham - Chief Engineer}179 H/H 16/7/36 | ||