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 the dispatch of two copies of photomicrographs for Tungsten contacts.
| Identifier | ExFiles\Box 35\6\ scan 189 | |
| Date | 20th August 1926 | |
| Y2894 M484. EFC. H15/EA20.8.26. Laboratory. Herewith two copies of each of the photo-micrographs Nos.A492, A493, A494 and A495. The Tungsten contacts which these represent have already been handed to you. H1. HC | ||