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).
From EFC to RHC requesting the commutator of a 20 HP dynamo armature be skimmed up.
| Identifier | ExFiles\Box 165\6\ img179 | |
| Date | 4th October 1928 | |
| To RHC.{R. H. Coverley - Production Engineer} from EFC. V5661 EFC2/T4.10.28. RE 20 H.P. DYNAMO. Herewith we hand to you a 20 H.P. dynamo armature. Would you please have the commutator skimmed up. EFC. | ||