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 showing four different designs for a model frame crosser.
| Identifier | ExFiles\Box 125\1\ scan0272 | |
| Date | 5th June 1935 guessed | |
| MODEL FRAME CROSSER, SCALE 1/2, Hs{Lord Ernest Hives - Chair} 2003, B.B., B, A, A.A., 1, 2, 3, 4 | ||