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).
Blueprint showing the installation of a Graham Supercharger on a Bentley engine.
| Identifier | ExFiles\Box 140\1\ scan0117 | |
| Date | 20th December 1937 | |
| GRAHAM SUPERCHARGER ON BENTLEY BV. 68. ORIGINAL WATER JACKET CONNECTIONS BOOST TEMPERATURE TAKEN HERE ORIGINAL LONG INTERMEDIATE PIPE R.Hy{Tom Haldenby - Plant Engineer} 20-12-37 | ||