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).
Design position report for the Wraith model, listing the status of various components.
| Identifier | ExFiles\Box 30\3\ Scan074 | |
| Date | 21th January 1935 guessed | |
| (6) ITEM. DESIGN POSITION. WRAITH - CONTINUED:- Oil relief valves and Tecalemit oil filter. In hand. Propeller shaft and universal joints. In hand. Gearbox:- Thickened flange on 3rd motion shaft solid with shaft. Completed. | ||