Groceteria.com

Not one of the most exciting ones ever, but since I was already doing Illinois...

https://www.groceteria.com/place/us-illinois/elgin/

Be forewarned that there are not a lot of interesting artifacts to see here. These are probably the best:

• Former Kroger/Dominicks on Summit

• Former National on Villa

Gromer's had several stores in nearby suburbs like Streamwood. They closed later in the 90s, I believe.