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).
Order for twelve battery cell vents for two different battery types.
| Identifier | ExFiles\Box 164\4\ img152 | |
| Date | 14th May 1934 | |
| 86122 Roy{Sir Henry Royce}, From Hs{Lord Ernest Hives - Chair}/Wst. Hs{Lord Ernest Hives - Chair}/Wst.8/MA.14.5.34. Will you please order for us to order No. 54001 twelve battery cell vents, six for Dagenite type 3KS5 battery and six for Exide type 674 Z battery. Hs{Lord Ernest Hives - Chair}/Wst. | ||