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).
Specification sheet for the lamps and electrical system on a Buick car.
| Identifier | ExFiles\Box 124\3\ scan0031 | |
| Date | 2nd May 1919 | |
| R.S. 834a (100 T) (S. G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 643, 19-2-20) G 2618 X.3317. 2.5.19 EFC. X3317 LAMPS ON BUICK CAR. X.1357. Head. 2 bulbs in each head lamp. 1 small central electrode type bulb and 1 large ditto. Side. Two ordinary bayonet type bulbs one in each side. 6 w. Tail. 1 Tail lamp type central electrode 2w. 6 volt system. LF. | ||