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).
Blueprint of an evaporatively cooled armoured car chassis.
| Identifier | ExFiles\Box 179b\4\ img049 | |
| Date | 13th April 1933 guessed | |
| EVAPORATIVELY COOLED PH: ① ARMOURED CAR CHASSIS. E75997 E8467 E83849 | ||