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).
Valve spring particulars for Rover vehicles, listing suppliers.
| Identifier | ExFiles\Box 158\4\ scan0100 | |
| Date | 4th November 1936 guessed | |
| Y1360 VALVE SPRING PARTICULARS FOR ROVERS. Tempered Spring Co. Ltd. Burton Weir Works. Attencliffe Road. SHEFFIELD. Lion Spring Co. Oldbury. BIRMINGHAM. ABERMILL BOND | ||