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).
Hand-drawn wiring diagram for the Goshawk Electrical System.
| Identifier | ExFiles\Box 51\2\ Scan125 | |
| Date | 19th July 1923 guessed | |
| Goshawk Electrical System X4338 77 + - Sh. Se. A | ||