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).
Request to obtain one sample 10 mm Y4 A.C. Spark plug from the A.C. Sparking Plug CO.
| Identifier | ExFiles\Box 163\5\ img004 | |
| Date | 23th May 1934 | |
| 81712a Roy.{Sir Henry Royce} From Hs{Lord Ernest Hives - Chair}/Wst. Hs{Lord Ernest Hives - Chair}/Wst.8/MA.23.5.34. Will you please obtain from the A.C. Sparking Plug CO., one sample 10 mm Y4 A.C.Spark plug. Order No.54001. Hs{Lord Ernest Hives - Chair}/Wst. | ||