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).
And a sketch regarding a large power Mercedes component.
| Identifier | ExFiles\Box 22\5\ Scan060 | |
| Date | 21th August 1914 | |
| instrument mincils Mercedes 10/- C. Mercedes large power Filed 21/8/14 A47 | ||