I would say it depends on what you are after. For wood bow building the Trad Bowyers Bibles are well worth the money and if you wait til spring number 4 will be coming out. Dean Torges' book, "Hunting the Osage" Bow and his video, "Hunting the Bamboo Backed Bow" are excellent as well as Paul Comstock's "The Bent Stick".
The "Witchery of Archery" is classic reading. "Bows and Arrows of NA Indians by Hamm is a good source of info on NA archery. "Masters of the Bare Bow, I" is the only one I've seen and it is well worth the money. Pat