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| | P-39 |
 | | The Bell P-39 Airacobra was an extremely creative and tremendously well engineered design for an advanced fighter interceptor, which placed the engine behind the pilot, driving the propeller with a long shaft. |
 | | P-39 Airacobra in Action, Number 43, Ernie McDowell, Squadron/ Signal Publications, 1980 |
 | | The Germans were developing a similar idea using a 23mm cannon in the V between the cylinders of a Bf 109, however the Americans did not have a similar engine, therefore a different design had to be pursued, which became the Airacobra. |
| www.ipmslivonia.org /ipms/Gallery/P-39/P-39.htm (500 words) |
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