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).
Stating that no tests have been carried out on plugs submitted by Alfred Watkins or Mr. Glen.
| Identifier | ExFiles\Box 33\3\ Scan015 | |
| Date | 2nd August 1919 | |
| To Srn. From EH. X.1812 b. EH1/LG2.8.19. 2nd. Aug. 1919. With reference to attached, we have never carried out any tests on Plugs submitted by Alfred Watkins or Mr. Glen. EH. | ||