Online reference

[zebuleon]

Here is the wiki for A Song of Ice and fire. I've found it very useful for prepping my game. at the bottom are links to things like the major houses which list most of their bannerman. so look it over if you haven't done so its a good substitute till the campaign guide comes out.

http://en.wikipedia.org/wiki/A_Song_of_Ice_and_Fire

[zebuleon]

Another source for Heraldry

this has some good images and history behind it.
http://www.rarebooks.nd.edu/digital/heraldry/

has more images
http://www.fleurdelis.com/

[zebuleon]

and another source

http://www.towerofthehand.com/