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).
Temperature readings from a test of a Hemingway radiator on a standard chassis during a road test.
| Identifier | ExFiles\Box 78\3\ scan0015 | |
| Date | 10th June 1912 guessed | |
| 5/ X496 Hemingway radiator on standard chassis with louvred side strips and dashboard filled in. Average road with slight trailing wind. z 1. With ordinary running 25 to 35 miles per hour. one minute readings. Atmos Water Floorbds. Floorbds. temp. temp. temp temp underneath. on top. Start 61 60 20 20 61 63 26 20 62 65 27.5 21 61 68 27.5 21 61 72 25. 19 62 76 27 18.5 62 79.5 26 18.5 Cold | ||