I could be misremembering from the old days. Where are PoK books? I looked in Field of Bone, Nekultos Forest and Inno Swamp without luck.
http://www.allakabor.com/eqatlas/atlas.html The blue "K" symbol on these EQAtlas maps denotes the PoK books. In Nektulous it is around 800, -300 (roughly based on the map). In Field of Bone it is around -3000, 1800 ish. Etc.
Sometimes, Rob accidently removes one or two. Has anyone checked that they are there today after patch?