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).
Diagrammatic views of Goshawk and E.A.C. dynamos showing wiring and rotation.
| Identifier | ExFiles\Box 51\1\ Scan165 | |
| Date | 30th June 1923 guessed | |
| R.R DYNAMOS X.4953, X.9660 Goshawk +ve rotation Diagrammatic Views from commutator end E.A.C. -ve rotation A B C S N + - 7+ 7- | ||