Hello
I just finished building a longbow(reflex-deflex) a few weeks ago. I buildt it from plans from Three Rivers Archery. Bought some supplies from Three Rivers Archery, Bingham Projects and most of the wood laminations from Old Master Craft. Go to this site, it has some good info on building a laminated bow.
http://www.stickbow.com/
Good Luck with your project. Next Saturday the whitetail season opens here in Wisconsin and my homemade longbow is going afield.
Dan