Fourteen lore books for modders to use. Many of these were in OOO, so they may look familiar to veteran players. I wrote some others but they tended to be more documentary-type material that would not really fit into Skyrim 200 years after Morrowind/Oblivion, when most of these books were written. Only one ('The Art of War Magic, v. II') is a skill book. Images can be found at the Nexus site, although they aren't very exciting. The following books are included:

A Brief History of War in Tamriel
A Brief History of Anvil and Piracy
An Inspection into the Costs of the Akaviri Invasion of Uriel V
The Crimes of the Imposter
The Practical Defense of Morrowind Volume I: Island Strongholds
The Hands of Almalexia
On Daedra Hearts
Transcript of a meeting of the High Council of Summerset, Cloudrest, 3E 341
House Hlaalu Stronghold Plans
The Imperial Navy
Khajiit Trophy Hunting
The Minerals of Morrowind
The Basic Guide to Telvanni Construction
The Art of War Magic, v. II

None of these have been added into the world. This is a modders' resource. If there is some interest I may consider placing a few around the world for people to seek out.

FOR MODDERS: Anyone is free to use this in their work. Just merge the .esp. It'd be nice if you added my name to the credits, though. You'll find the books prefixed with XUI.

Nexus link: http://skyrim.nexusmods.com/mods/33433

The texts can be found in this list (they're the ones authored by Xui'al): http://tamriel-rebuilt.org/?p=books