From my travels around Skyrim I haven't seen one wild werewolf to this date, can somebody confirm if they are in or not?

Also, could somebody list the locations ofall the Unknown Books?

Travels? But Talos, you're dead!

To answer your first question, I have encountered one wild werewolf. I forget when and where.

To the second, I'm not sure.

I've found a few werewolves in the reach, not sure about other places.

I found the unknown books while looking for other stuff, like the giants for the paragon gems.

I've found all but on, book III.

http://elderscrolls.wikia.com/wiki/Unknown_Books

says where they are, so I'll try that for book III.

I found all the Tomes. I think there's 3 because the misc quest ended when I got I,II,III.

There's at least a volume IV, which I know because I have it.