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).
Typed instruction to Waller in France to continue mileage testing with both pumps in parallel.
| Identifier | ExFiles\Box 91\2\ scan0097 | |
| Date | 9th July 1937 | |
| 300a 9.7.37. WALLER HOTEL DE FRANCE CHATEAUROUX INDRE FRANCE. CONTINUE MILEAGE WITH BOTH PUMPS IN PARALLEL WRITING. ROBOTHAM. A Robotham | ||