Looked Through: A Collector's Guide to the '03 Springfield by Bruce N. Canfield, 091721840x, 1989.
I got this from Waupun after the Director there recommended it when we were talking guns. As the title says, it's a collector's guide. Owning one rifle does not make me a collector and I have not even bothered to check any of the markings on my rifle to compare against information from the book.
A good book with LOTS of information on development and production.