![Very Happy :D](./images/smilies/icon_biggrin.gif)
http://www.koboldquarterly.com/k/article2003.php
To be fair, they're not full-blown Áereth books. But they do tie-in. They use Áereth as the default world. Obviously we want the books to be easily adaptable for gamers who wish to use their own worlds or another established setting.I didn't know the handbooks had Known World details in them.