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).
Fan for models B.III and B50.
| Identifier | ExFiles\Box 97\1\ scan0231 | |
| Date | 1st October 1938 | |
| H00. Rm{William Robotham - Chief Engineer}/Std. By/CS.3/EH.1H-10.38 Re. B.III & B50. - Fan. in file H2H | ||