Here’s some info, Paul. I got it from an article by Fred Sauceman titled "Blue Circle burger remains distinct".
The Blue Circle
333 Bluff City Hwy.
I’m from Morristown – got several items from Blue Circles that I’ve collected over the years – coffee mug, drinking glass, matches, etc. They’re hard to find! If you’re interested, I’ll help you find the article by Mr. Sauceman.