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 for a Goshawk 11 dumb iron, which has been made 30% longer and includes a comparison to a Fiat part.
| Identifier | ExFiles\Box 75\3\ scan0340 | |
| Date | 11th April 1922 | |
| X.4260. Hs.{Lord Ernest Hives - Chair}(Le CanadelHenry Royce's French residence) from E.{Mr Elliott - Chief Engineer} E2/M11.4.22. GOSHAWK 11. DUMB IRON X.4260. We send you herewith a blue print shewing the dumb iron which has been made 30% longer. The drawing also gives an illustration of the 10-15 HP. Fiat dumb iron for comparison. E.{Mr Elliott - Chief Engineer} | ||