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).
Photographic record of three different rubber components with part numbers and service life.
| Identifier | ExFiles\Box 119\1\ scan0010 | |
| Date | 3rd April 1937 guessed | |
| ENGINE RUBBER N.S. F.W.180 17 1/2 hrs. RUBBER PAD BETWEEN REAR AXLE AND SPRINGS. F.W.305/6. 50 hrs. FRONT END OF REAR SPRING ANCHORAGE RUBBERS. F.W.275. 50 hrs. | ||