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).
Cross-reference note regarding H.T. wiring and H.T. wiring tubes.
| Identifier | ExFiles\Box 52\1\ Scan149 | |
| Date | 31th December 1930 | |
| X.4473. 31.12.30 For further matter relating to H.T. wiring and H.T. wiring tubes (general) see X.6117. | ||