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).
Extract regarding carburetter modifications for the American model.
| Identifier | ExFiles\Box 122\4\ scan0001 | |
| Date | 27th September 1919 | |
| X.3675. Extract from R6/G27.9.19. RE AMERICAN MODEL CARBURETTER. Build reverse hand but with jet control threads as now to agree with marking on steering column. | ||