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).
List of three new types of interleaving materials that have been placed on order.
| Identifier | ExFiles\Box 154a\2\ scan0238 | |
| Date | 22th January 1940 | |
| -2- (c) We have on order three new types of interleaving - 1. Spaldite with reinforced tips of Tufnol as decided upon when Mr. Spittlehouse came over from Woodhead. 2. Graphite Impregnated Tufnol. 3. Ferodo V.G. 90 type of material. Rm{William Robotham - Chief Engineer}/Clm.{D. D. Clapham} | ||