Quote Originally Posted by Bigkahuna View Post
The only flag I have ever seen used by the Eastern Band is the Cherokee Seal on a blue background. Obviously the Western Band use something different.
The information quoted is from the Cherokee Nation's web site, and the flag in question is featured prominently there:

http://www.cherokee.org/

If that's not official, then I don't know what else would be. There are three bands of Cherokee recognized by the Federal government, and several groups that are recognized by states such as Missouri (Northern Cherokees) but not by the BIA.

T.