Letter to Wellworthy Piston Rings providing particulars on the A.C.9 alloy.
| Identifier | ExFiles\Box 115\5\ scan0266 | |
| Date | 28th April 1939 | |
| 1020a Rm {William Robotham - Chief Engineer} 17/R. 28th April, 1939. J. {Mr Johnson W.M.} Howlett, Esq., Messrs. Wellworthy Piston Rings, LYMINGTON, Hants: Dear Howlett, Herewith some particulars on the A.C.9 alloy. Please say if you want any more. Yours sincerely, | ||
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).