Blueprint showing four different experimental cam designs for the Wraith model.
| Identifier | ExFiles\Box 158\4\ scan0231 | |
| Date | 18th May 1938 | |
| SCD660 EXPERIMENT Nº1 EXPERIMENT Nº2 EXPERIMENT Nº3 EXPERIMENT Nº4 EXPERIMENTAL CAMS WRAITH ROLLS-ROYCE, LTD. PRINT ROOM MAY 18 1938 DERBY. SCD660 Bakers 12 588 | ||
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).