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).
List of parts sent from the United States requiring experimental work.
| Identifier | ExFiles\Box 38\1\ Scan018 | |
| Date | 30th January 1920 | |
| X.3403 Jan. 30th 1920. X.3893 PARTS SENT FROM THE STATES ON JAN. 30TH. '20. WHICH EXPERIMENTAL WORK IS REQUIRED. In bag brought) by CY. seiz- ) (11) 1 new type A.C. spark plug - auto type. } X.3905 ed{J. L. Edwards} in customs ) 1 " " Champion " " " Just released) 1 " " Herz. " " " & sent to ) (12) Ball Bearings. X.3907. F.H. Royce. ) X.3906. 4 Fafnir. 2 - 30 x 80 x 21 mm 2 - 17 x 40 X12 p X.3402 4 Hess Bright. X.3159 4 New Departure. (13) 1 Foxborough thermometer, similar to that X.3903 supplied by Cambridge Scientifix Instrument C (14) 1 Triumph Gasoline level gauge for petrol tank X.3896 as designed for new Lafayette Car in U.S. (15) 1 Bijur Vibrator and cut-out box for Bijur X.3878 Generator. (16) Whittle type link belt of American make. X.3897 (17) 3 different types of oilers suitable for spring X.3898 shackles. | ||