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).
Estimated cost and production timeline for new tools for the 25/30HP Chassis.
| Identifier | ExFiles\Box 87\5\ scan0069 | |
| Date | 5th March 1937 guessed | |
| UTILITY. STANDARDISATION/PARTS. Estimated cost of new tools included under 25/30HP. Chassis. Standardisation Sheet X.No.541. Could be brought on to production at the 1st.chassis in "L" Series. (without scrap.) | ||