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).
Confirming receipt of various qualities of carbon dynamo brushes for the Goshawk from Le Carbone Co.
| Identifier | ExFiles\Box 39\2\ Scan054 | |
| Date | 7th March 1921 | |
| X.3533. EFC/T7.3.21. X. 3533 - RE CARBON BRUSHES FOR GOSHAWK DYNAMO. We have to-day received from the Le Carbone Co. 6 D.1553 C.G.3 quality dynamo brushes for the above. 6 " E.G. " " " " " 6 " X " " " " " which were ordered 26.1.21. EFC. Date received in S Coils - 24-2-21. | ||