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).
Parts list detailing quantities for cylinder block and head covers.
| Identifier | ExFiles\Box 88\3\ scan0032 | |
| Date | 12th October 1933 | |
| - 2 - E/JNR.{Charles L. Jenner}2/HP.12.10.33. Cylinder block jacket covers. - 6 off. Cylinder head covers. - 2 off. E/JNR.{Charles L. Jenner} | ||