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).
Clarifying the ownership of several pairs of Watford Type IS.12 Aero Magnetos.
| Identifier | ExFiles\Box 43\4\ Scan025 | |
| Date | 7th December 1926 | |
| X4021 7.12.26. WATFORD TYPE IS.12 AERO MAGNETOS Two pairs of these, Nos.83119/20 and 83132/3 are Air Ministry property. The other two pairs, Nos.83134/5 and 83136/7 are our property. EFC. | ||