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).
Telegram regarding the return of a batch of plugs and the dispatch of improved replacements.
| Identifier | ExFiles\Box 58\3\ Scan121 | |
| Date | 31th January 1930 | |
| ROYCAR DERBY. PLEASE RETURN WITHOUT USING THE THIRTY PLUGS TYPE 618 POSTED LAST NIGHT WE ARE SENDING TODAY THIRTY TO REPLACE SAME TYPE WITH SLIGHT BUT IMPORTANT INTERNAL IMPROVEMENT. KAELGEE. | ||