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).
Performance graph for an Alfa Romeo 1750 cc engine.
| Identifier | ExFiles\Box 179\3\ img008 | |
| Date | 29th February 1932 guessed | |
| ALFA ROMEO 1750 cc 1 DIV = 4 CRANKSHAFT Y-Axis labels: .095, .05, 0, -.005, -.010, -.015, -.020, -.025 X-Axis labels: 0, 5, 10, 15, 20, 25, 30, 35, 40 | ||