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).
Page from a report listing a breakdown test and the examination of windings.
| Identifier | ExFiles\Box 164\5\ img076 | |
| Date | 18th August 1931 guessed | |
| -5- (13) Final intensive breakdown test. (14) Results of examination of windings. | ||