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).
Report page detailing the results of three tests on components from Group D.
| Identifier | ExFiles\Box 34\1\ Scan233 | |
| Date | 10th December 1940 | |
| -3- Contd. Group D.{John DeLooze - Company Secretary} 1st. Test 3. No.823 broke down. 2nd. Test 4. O.K. on 778 & 796. 3rd. Test 2. both O.K. Both held charge well. R.R. 138A (100) (T) (S.H) 198. 10-12-40) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 5947 | ||