I didn't ask where they
> source their wood, but it probably doesn't matter to me, because I'm sure
> that buying from a European source would bankrupt me. I'm looking for
> sources here in the US.

You might be surprised that costs for shipping is not that bad.

The cost of the plywood may be unacceptable, but costs for shipping will not - if you can find the wood you really want and are willing to use the time involved for your project.

I find shipping (by air) cost for kits from Pygmy and CLC in the US to be quite acceptable if I am to buy them from the US. And: The ply they use are made, I believe in Europe, probably in Dutchland or England, but I am not sure about this.

Jan Gunnar Moe