That would make at least two flying C-97s. The Berlin Airlift Foundation has one but I don’t think they’ve flown it much.
Most of their work is on their C-54.

Also Clay Lacy bought a KC-97 at the hawkins & Powers auction. I hear it will be flown to Seattle and converted to Stratocruiser specs. I don’t know if it will fly after that or go into the Museum of Flight.