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).
Note regarding tappets and push rods for the Wraith III and Bentley III models.
| Identifier | ExFiles\Box 100\3\ scan0007 | |
| Date | 13th July 1938 | |
| H5H Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} Da.{Bernard Day - Chassis Design}10/G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 13.7.38. Wraith III & Bentley III Tappets & Push Rods. file 1360. | ||