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).
Request from EFC to Mr. Brock to have a standard secondary winding wound on a coil.
| Identifier | ExFiles\Box 69\1\ scan0328 | |
| Date | 1st September 1930 | |
| X8710. Mr. Brock. from EFC. EFC3/AD2.9.30. Will you please have a standard secondary winding wound on coil handed to you herewith. Order No.54733. EFC. H | ||