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).
List of parts with quantities and their corresponding part numbers.
| Identifier | ExFiles\Box 99\3\ scan0122 | |
| Date | 25th January 1939 guessed | |
| -2- 2 5/16 steel balls. 2 Caster nut KB.3589. 1 Caster Nut KB.3581. 4 Cheese headed screws K.1910. 1 Thermostat Unit EB.4214. ............ | ||