In Chapt. 1 when you first talk with Einar Gauser, he mentions some books that Sile recently bought. One of them is "De Vermis Mysteriis". The book is actually part of Cthulhu Mythos lore, one of the many tomes of dark and forbidden knowledge-like the Pnakotic Manuscripts & Cultes des Goules. Its not as well known as the Necronomicon but its mentioned in several stories-including some by Robert E. Howard and Stephen King. Robert Bloch (who wrote Psycho) created it in 1935.

This should alert you that all is not right with Sile. Anyone poking around the secrets of The Great Old Ones is suspect in my book.

The other one mentioned, "The Exeter Treaties", I believe refers to recent history in the Northern Kingdoms.

Brilliant find op. As a Lovecraft fan, I'm ashamed I didn't catch this. There are some obtuse references. Shows the literary savvy in this game.

Yes, "The Exeter Treaties" are related to the history of The Kovir and Povis (the most northern land on the map) and Lan Exeter is capital city. This treaties are mentioned in the Saga in the retrospective narration by the Dijkstra (8th Chapter, The Tower of the Swallow). Their purpose was to arrange relations between Kovir Povis and Redania (Redanian King used to be a sovereign of the Kovir Povis) and conditions of the overseas trade. The "First Tractate of Exeter" was later known by its first words: "Mare Libertum Apertum ...".

Pity, that it isn't translated to the English. It is very impressive political reading.

Nice one, very subtle. Prefer this kind of easter eggs over in-your-face stuff like the AC assassin or BBW references.

shows the literary savvy in this game.
Yeah, now I've got my radar on for others. So far I've found H.P. Lovecraft, Tolkien, D&D and references to European philosophers.

Pity, that it isn't translated to the English. It is very impressive political reading.
Like I need another reason to gnash my teeth about lack of English translations :-(
Hopefully the success of the game will motivate the publisher.

there is also the "lure of the temptress" the book about succubi in the game; which is also:
http://www.gog.com/en/gamecard/lure_of_the_temptress

There was one such mythos reference in TW1, so not suprised they continued in TW2 :)

One of the elves guarding the mist in Act II of Vergen is named Drizzt. I thought that was pretty funny.

i think there is a drizzt in act I too.