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).
Blueprint comparing 'Effective' and 'Ineffective' wing designs for experimental vehicles 10.E.X. and 15.E.X.
| Identifier | ExFiles\Box 18\2\ Scan038 | |
| Date | 4th October 1928 guessed | |
| EFFECTIVE WING A B C 10.E.X. LIP FINISHED HERE INEFFECTIVE WING A B C 15.E.X. SECTIONS OF LIP AT A, B, & C SHEWN ON SEPARATE SKETCHES | ||