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 the Goshawk II engine showing a modification to raise the petrol level.
| Identifier | ExFiles\Box 5\4\ 04-page036 | |
| Date | 2nd March 1932 | |
| E.51611. E51607 NORMAL LEVEL ALTERNATIVE NEEDLE E51609 E51608. ROLLS-ROYCE LTD. PRINT ROOM 2 - MAR 1932 DERBY E.51611. GOSHAWK II PETROL LEVEL RAISED '375. | ||