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).
Drawing illustrating the condition of Cadillac exhaust valves after 10,000 miles of trials in France.
| Identifier | ExFiles\Box 125\1\ scan0240 | |
| Date | 12th March 1935 | |
| CADILLAC EXH. VALVES AFTER 10,000 MILES TRIALS IN FRANCE NOTE:- 8 EXHAUST VALVES ARE BURNT SIMILARLY. 1.500" (APPROX) STEM HEAVILY CARBON DEPOSITED SEATING BADLY BURNT ALL ROUND ROLLS ROYCE, LTD PRINT ROOM MAY 35 | ||