Supersonic

Wow, I thought someone would know

Hello! Found this old shop coat at an estate sale and can’t find any info on this old dealership at all. Not sure if Allison is the town the dealer was in or if it was the name of the owner. It’s about knee length and says ALLISON PONTIAC on the back in big red letters and has an old Pontiac patch on the front. Curious to find out where this dealership was . Any info would help. I have searched the web till I’m blue in the face and found nothing , Sorry about the crumby photos. They got blurry when I had to resize them to fit this forums photo posting specs. Thanks in advance! Gregg