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).
Blank page with a purple date and location stamp from the Stress Office.
| Identifier | ExFiles\Box 16\4\ Scan285 | |
| Date | 20th April 1931 | |
| 30. STRESS OFFICE ROLLS-ROYCE LIMITED 20 APR 31 DERBY. | ||