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).
Extract concerning Bakelite insulating materials and Bone Grey Fibre.
| Identifier | ExFiles\Box 69\1\ scan0397 | |
| Date | 2nd November 1925 | |
| X4646 Extract from EFC1/T2.11.25. X.3513. BAKELITE INSULATING MATERIALS & BONE GREY FIBRE. "As regards the bone grey fibre (from Spauldings), this was found to be almost identical with the material which we have standardised." | ||