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).
Telegram to N.L.T. Robotham in Detroit regarding a type-test on valves.
| Identifier | ExFiles\Box 173\1\ img045 | |
| Date | 18th January 1934 | |
| x/ma 18.1.34. N.L.T. ROBOTHAM, ATHLETIC CLUB, DETROIT, MICH., U.S.A. SENT TODAY REPORT ON VALVES. SUCCESSFULLY COMPLETED TYPE-TEST ON LEAD STIFF N.M.C. SEATS AND VALVES WITH SODIUM IN STEM ONLY. ASK HERON HIS THEORY LEAD -continued- | ||