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 for an Essex Terraplane '8' exhaust manifold with dimensions.
| Identifier | ExFiles\Box 21\6\ Scan098 | |
| Date | 27th October 1933 guessed | |
| ESSEX. TERRAPLANE '8' - EXHAUST. MANIFOLD, 24.8", 5.1", 1.7", 4.5", 2.2", 4.5", 1.7", 5.1", .5", 3.5", 2.1", .5", 3.2", 2", 2.5", S1, S2, S3, S4, 4.1", .5", 1:35, 2, .5" | ||