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).
File divider note indicating correspondence for Hydraulic Tappets is located in a separate file.
| Identifier | ExFiles\Box 140\4\ scan0309 | |
| Date | 11th November 1940 | |
| PS Ref. No. Drg No Part No. Section 11.11.40 For correspondence re Hydraulic Tappets, see File No 1360 (Valves & Fittings) ------ | ||