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).
Instructions for using a Delco coil on a Wraith model pending an improved coil.
| Identifier | ExFiles\Box 108\1\ scan0386 | |
| Date | 22th February 1938 | |
| 600a 22.2.38. WALLER VINGT-ET-UN CHATEAUROUX. USE DELCO COIL ON WRAITH UNTIL IMPROVED ROLLS-ROYCE COIL AVAILABLE DELCO REQUIRES BALLAST RESISTANCE SHORTING. [Signature] ROBOTHAM. | ||