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).
Manual for the Burman Douglas Steering Gear.
| Identifier | ExFiles\Box 28\3\ Scan043 | |
| Date | 10th November 1934 guessed | |
| THE BURMAN DOUGLAS STEERING GEAR x4094 | ||