Okay so for the longest time whenever I got Skyrim I was wondering why there was nothing about infernal city or Lord souls in any book or no one ever said any thing about it. But i just got done reading lord of souls and attrebus tells his dad to not give him the credit. So that might be the reason we don't here any thing about him. But he also tells his dad to give the synod and collage of wispers the credit.

So why do we not hear or read any thing about it in skyrim? Not even a mintion of umbrial or any thing. Any one got any ideas?

Yea it seems like Bethesda gave the author the go-ahead on making those books but then turned a blind eye to them. I wish they'd make more novels related to the series and not just games. They need to expand!!

"How the tree came to grow there is a bit of a mystery... Some say that when Vvardenfell erupted, a piece was blown to the middle of Skyrim and from the crater grew the tree. I've also heard that it was a spore that fell from an island floating in the sky, but that just sounds like nonsense. All I know is that the sap makes you feel as healthy as a cave troll, but slow as a drunk horker. And that and it fetches good coin."

Weren't there hist-like tree on Umbriel? Even if it was from there, that doesn't explain why Ysolda doesn't seem to know anything about the island. Maybe people just don't learn or talk about history.

They kept a lot what with the new Aldmeri Dominion and the state of Morrowind.

There is a mention of Umbriel when Ysolda is asked about the origins of the Sleeping-Sap Tree. That's about it though.

Edit: Ninja'd...

There are plenty of references to the Red Year and a few mentions of the Argonian invasion of Morrowind.

Because it happened some 150 years ago, and, for Skyrim, was entirely unimportant. And, like others mentioned, while the main plot isn't really referred to, just about everything from the sidelines ended up playing a part.

Nevertheless, I was really looking forward to reading an in-game book or maybe two about Umbriel.

I really am dissapointed that Skyrim still has about 80% Morrowind books. In Morrowind at least we could meet some of the characters from the books, but Skyrim is just meh when it comes to new books. I mean, http://www.uesp.net/wiki/Lore:Night_of_Tears_%28book%29s, really? That is just atrocious. "I think the Nord found a powerful thing under Saarthal and that the fight was about that. I have no proof nor indication but idle speculation, yet I'm writing a book anyway."

Dragonborn makes up a lot of that with some excellent insight in for instance the new Dunmer faith, but vanilla? Not so much.

Well yeah there's the stuff about the red year and all that but nothing about umbrial or all the dead army thing