Woohoo!
I found my last book in the Legderman Lounge in Dalaran this evening. The Transmutation one.
Blizzard is a very cruel industry, laying out achievments like these. ^_^
Who else is sick enough to put an item that lasts a mere three minutes out for people to find, with a spawn timer that ranges from 3-4 hours in between. What's worse is, that fake books can spawn in the location of the actual books you need.
I now have a built in panicky elation, the same kind when you find gems or rings in Diablo when you hear the sound they make when they're dropped. I enter the city, and I just HAVE to scour everywhere, looking, hunting, hoping... hoping that maybe ONE of these damned books have spawned.
But now, 'eh heh heh... now it's OVER! I DID it! I win Blizzard! Ha ha! Ha ha ha!
World of Warcraft, I hate you. n_n'''