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).
The bottom flange of a near side gusset after 32 hours.
| Identifier | ExFiles\Box 99\2\ scan0182 | |
| Date | 2nd February 1938 guessed | |
| Bottom flange of N.S gusset after 32 hrs. | ||