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).
Internal request to order six Watford EW6 magneto distributor carbon brushes for experimental work.
| Identifier | ExFiles\Box 65\3\ scan0419 | |
| Date | 14th January 1930 | |
| X7791. Roy{Sir Henry Royce}/Dn. from EFC. EFC3/AD14.1.30. Will you please order for us for replacement work on experimental magnetos, six Watford EW6. magneto distributor carbon brushes. EFC. | ||