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).
Standardisation sheet for the 20 HP chassis, listing parts not yet fitted to production.
| Identifier | ExFiles\Box 29\2\ Scan125 | |
| Date | 1st December 1926 | |
| 1st. December 1926. 20 HP. CHASSIS - STANDARDISATION SHEETS. PARTS NOT YET FITTED TO PRODUCTION CHASSIS. Date Issued | Title | Date Completed | Series where brought in | Chassis to Test 18.5.26. | Pedals nearer to dash | 14.6.26. | 151st "J" | 5.3.27. 18.5.26. | Modified Steering | 14.6.26. | 151st "J" | 5.3.27. 27.5.26. | Ammeter made by Elliotts | 27.8.26. | 151st "J" | 5.3.27. 31.5.26. | Moulded Redmonal Coil Case | 14.6.26. | K.{Mr Kilner} | 6.5.27. 22.6.26. | 40/50 Type Klaxon Switch & wire for 20 HP. | 14.7.26. | 151st "J" | 5.3.27. 16.9.26. | Ignition Coil with finer primary winding. | 19.10.26. | K.{Mr Kilner} | 6.5.27. 24.9.26. | Main Bearings with Steel Shells | 27.10.26 | Not known. | 22.9.26. | Distribution Box Cover - Method of fixing altered. | 20.10.26. | 176th "J" | 6.4.27. 22.10.26. | Incorporation of B. Type Gear Lever with "D" Steering. | 11.11.26. | K.{Mr Kilner} | 6.5.27. | ||