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).
From EFC to EH requesting a report on the X.2369B chassis piston experiment.
| Identifier | Morton\M11\ img058 | |
| Date | 28th August 1917 | |
| To EH. from EFC. EFC3/AT28.8.17. X.2369B. - Piston E.11640 with 6 Upper Rings & one Scraper Ring, with Skirt Below Bottom Ring. Rings Nos.4 & 6 Pinned. (2nd. Column of Supersheet E.10937). Will you please note that we are waiting your report on the above Chassis Piston Experiment as promised. EFC. | ||