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 concerning push rod clearance in the cylinder head for W.III & B.III models.
| Identifier | ExFiles\Box 10\3\ 03-page161 | |
| Date | 2nd July 1938 | |
| 65H Swdl.{Len H. Swindell} Da.{Bernard Day - Chassis Design}H/G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2.7.38 W.III & B.III Push Rod Clearance in Cylinder head file 1360 | ||