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).
Data table comparing performance characteristics of various American car models.
| Identifier | ExFiles\Box 128\1\ scan0323 | |
| Date | 22th April 1938 guessed | |
| 1104. CPTN 20 35 50 60 Comp. Ratio. 11% 7% Chevrolet Master. 112.5 23 20.2 17.2 15.5 6.3 32.0 44.2 Oldsmobile Six. 114 20.5 20.1 17.2 15.2 6.1 33 45 Pontiac 108.5 20.75 20.0 17.0 14.5 6.2 32.5 45 Buick 8.41 111 18.2 17.2 15.2 14.8 - 31 43 Oldsmobile 8. 112.5 20 18.7 15.7 13.7 - 29 41. Pontiac 8. 114.5 22.6 20.7 17.7 15.0 - 33 44. | ||