Has anyone encountered this brand before? My sister found it at a Kneaders in Meridian, ID. There's no information on the bottle other than what you see. Is this a vanity label or a local small soda bottler?

Thanks for the post - hadn't seen this before. It appears to be a private / vanity label brand.
_________________
Bottoms up!
Kevin Guske

“So here’s a tribute toast with root beer in hand to you and the many mugs of suds along your happy trails.” --Charles Wysocki, artist and root beer fan, 1928-2002

It is in fact a private label. I've done some serious sleuthing and tracked it back to its source. The labeler is Dowdle and Daughters, but they don't make the brew. I'll be writing up a full report on the Gourmet Root Beer Blog soon.

Here's the dramatized version of my quest to find the truth about said root beer. In short, it's Ginseng Up. http://blog.gourmetrootbeer.com/2013/04/dr-percival-c-mcgillicuddy-and-the-case-of-the-mystery-root-beer/