Are they still making plain flour and if so were can it be found? We are unable to find it in our grocery stores in Augusta Georgia.

Not sure where you are at but here in Atlanta, Kroger, Public, Food Depo, Walmart

What's plain flour?
The 3 basic flours are bread, cake, and all-purpose, a blend of the first two.
There's whole wheat, bleached white, unbleached white, white whole wheat, bread machine white, white cake, white all-purpose.
I guess you could get all-purpose white, something like Gold Medal or Pillsbury if it's for all kinds of baking.

Plain is a term used for all purpose, it is a older country term
I think it used to be on some of the brands 20 years ago.