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 receipt of 100 pairs of Tungsten Contact Points and how to acquire six for experimental purposes.
| Identifier | ExFiles\Box 35\6\ scan 345 | |
| Date | 25th October 1927 | |
| EFC. X2894 Roy{Sir Henry Royce}/AW1/N.25.10.27. 31304 Replying to yours EFC3/T21.10.27. will you please note that 100 pairs of Tungsten Contact Points D.51408 and D.51560 have now been received. The six of each that you require for Experimental purposes may be had on application being made to Mr. Lindsay. ROY.{Sir Henry Royce} B 1442-5 | ||