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).
The procurement of 'Mercury' plugs from company stores.
| Identifier | ExFiles\Box 50\2\ Scan060 | |
| Date | 19th May 1921 | |
| W/S To Bk.{A. Birkett - Commercial Manager} from Hs.{Lord Ernest Hives - Chair} X4295 Hs{Lord Ernest Hives - Chair}1/LG19.5.21. X4295 RE "MERCURY" PLUGS. Referring to your Bk{A. Birkett - Commercial Manager}17/DN/13.5.21. We do not propose sending to you any of the above plugs because these can be obtained from either the Cricklewood Stores or the Derby Stores in the usual way. | ||