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).
The ordering of 20/25 batteries up to the end of the 'U' series.
| Identifier | ExFiles\Box 58\4\ Scan026 | |
| Date | 26th January 1932 | |
| X6137 Roy{Sir Henry Royce}/Ms. from Hs{Lord Ernest Hives - Chair}/Wst. c. EY. Wor.{Arthur Wormald - General Works Manager} Hs{Lord Ernest Hives - Chair}/Wst.7/AD26.1.32. 20/25 BATTERY Will you please note that we should definitely not commit ourselves to ordering any more batteries other than will be required up to the end of "U" series. Hs{Lord Ernest Hives - Chair}/Wst. | ||