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).
Inquiry regarding the testing of Hallowax to determine if it is superior to the current wax in use.
| Identifier | ExFiles\Box 61\1\ scan0147 | |
| Date | 22th November 1930 | |
| X6110 EFC. BY/RD1/W.22-11-30. Re :- Hallowax. With reference to BY/RD3/W.1-11-30 ; we shall be pleased to know if you have tested this Wax so that we can take steps to obtain some if it is better than what we are at present using. BY/RD. | ||