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).
Message clarifying that the B.III mock-up radiator is required for Sunbeam, Wolverhampton, not the B.50.
| Identifier | ExFiles\Box 150\2\ scan0163 | |
| Date | 15th November 1938 | |
| 1280 Rm {William Robotham - Chief Engineer} /Jtt 15.11.38. Dunn. Sunbeam, WOLVERHAMPTON. MOCK UP RADIATOR REQUIRED IS B.50 NOT B.III. Steadman ROYCAR. | ||