"Warbler" wrote:
Are there any good sources
(books?) that go into all the details on how to build a a top
quality
wood door.

Take a look at the NYW episode where Norm built an exterior door.

Personally, I'd take a hard look at a project like this before
undertaking it, based on the availability of composite doors which are
not only more stable, but have better insulating qualities, and
probably are less costly.

Lew