Photograph of an all-welded Bentley B frame with a 12ft track.
| Identifier | ExFiles\Box 86\4\ scan0236 | |
| Date | 8th June 1937 guessed | |
| BENTLEY B FRAME - 12' TRACK ALL WELDED DRAWING N.Y. 2684D | ||
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).