RE: Charlie Kellogg's TBM Avenger Build
Chic, This is only speculation on my part, but I can't think of any aircraft built by other countries that the US used during WWII. The only thing that comes to mind off the top of my head was the Rolls-Royce Merlin engine, but most of those used by us were license built by US mfg's. The reason for both situations is simple. We were by far the largest country (Russia notwithstanding) with the greatest resources, technology, and industrial infrastructure and manpower. The other Allied countries were hard-pressed to build sufficient weaponry to take the war to the Axis prior to our entry, and could barely provide enough for defense. The Russians were technologically far behind before the beginning of the war and into the early part of it, but rapidly began catching up. Most of their own wartime production went for their own use.