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).
List of experiments and modifications incorporated on chassis 49 GB.
| Identifier | ExFiles\Box 159\7\ scan0046 | |
| Date | 3rd February 1915 | |
| Copy of Instruction Sheet No. 28164. &&&&& Mr. Mercer. Re Chassis 49 GB. The following experiments have been incorporated on this car:- Arr. Drg. Rudge Whitworth Wire Wheels. X. 421. Oil Retaining Device for Cone Clutch. X.1139. G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 4465. Insulated Ignition Switch. X.1413. F.{Mr Friese} 5730. Rear Springs. F.{Mr Friese} 5529/30 18and 1900 lbs. X. 1245. F.5621. F.{Mr Friese} 5553. G.4444. Underslung type. A.E.MATTHEWS. | ||