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).
Inspection photograph of engine main bearings and their upper halves, laid out after a mileage test.
| Identifier | ExFiles\Box 114\3\ scan0134 | |
| Date | 30th September 1937 guessed | |
| UPPER HALVES <- 1 TO 7 -> UNIT E.S.BG. (13,101 MILES) CHASSIS B.117 J.Y. MAIN BEARINGS. 24730 D 50 1 D 50 2 D 50 3 D 50 4 D 50 5 D 50 6 D 50 7 | ||