I really thought they made the beds from white oak (Quercus alba).
I was a bit surprised that a bed from the midwest would be made from doug fir.

So i was asking the experts what they thought. did they make these large beds out of a variety of woods?

I stopped by and talked to the main guy in the bay area who sells wood commercially for all the big rigs. these days he said its wood out of malaysia and brasil, and they switched over from oak in the 70s.