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).
Checklist table tracking the status of work completed on various vehicle components for different chassis series.
| Identifier | ExFiles\Box 108\2\ scan0190 | |
| Date | 4th January 1939 guessed | |
| Chassis No. | Cyl. Head. | Speedo drive gear. | Instr. Patch Lights | Distru. | Prop Shaft & 1st.motion shafts. | Arm't Term'l | Wheel Nuts WKA-11 | Done | Done | Done | | | | WKA-12 | Done | Done | Done | | | | WKA-14 | Done | Done | Done | | | | WKA-15 | Done | Done | Done | | | | WKA-16 | Done | Done | Done | | | | WKA-17 | Done | Done | Done | | | | WKA-20 | | | | | | | WKA-42 | Done | Done | Does not apply from this chass. onwards | | | | WKA-44 | Done | Done | | | | | WKA-48 | Done | Done | | | | | WKA-63 | Done | Done | | | | | WKA-72 | Done | Done | | | | | WKA-80 | Done | Done | | | | | WKA-86 | Done | Done | | | | | WKA-98 | Done | Done | | | | | WKA-106 | Done | Done | | | | | WKA-107 | Done | Done | | | | | WRB-7 | Done | Done | | | | | WRB-20 | Done | Done | | Done | | | WRB-38 | Done | Done | | | Done | | Done WRB-40 | Done | Done | | Done | Done | | Done WRB-46 | Done | Done | | Done | | | Done WRB-54 | Done | Done | | Done | | | Done WRB-61 | Done | Done | | Done | | | Done WRB-69 | Done | Done | | Done | | | WRB-79 | Done | Done | | | | | Done WRB-80 | Done | Done | | | Done | | Done WMB-7 | Done | Done | | Done | | | Done WMB-15 | Done | Done | | Done | | | Done | ||