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).
To Roy requesting an order for two B.T.H. combined aero booster coils and starter motor switches.
| Identifier | ExFiles\Box 168a\2\ img239 | |
| Date | 4th September 1936 | |
| 6139 To Roy.{Sir Henry Royce} Hs{Lord Ernest Hives - Chair}/Wst.K/JH.4.9.36; Please order for us to Order No.55336.R. 2 B.T.H. Combined Aero Booster Coil and Starter motor push-pull switches. similar to the one they have already supplied to us. Hs{Lord Ernest Hives - Chair}/Wst. not required | ||