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).
Cost summary report for testing the 'L' series chassis.
| Identifier | ExFiles\Box 106\2\ scan0015 | |
| Date | 8th October 1927 | |
| CHASSIS PARTS of STANDARDISATION. No. of first chassis to test. 'L' series. Date to test. 8.10.27 Cost of scrap - if any. Nil. Cost of jigs and tools. £176. 0. 0 | ||