I saw that you were looking for a Mr. Do! machine. There is a lonely (the quarters I put in made a sad hollow thump in the box...) machine in pretty good shape at a corner at the Reading Regional Airport near the public restrooms. It is not owned by the restaurant there, so maybe the airport itself owns it? I didn't see any plaques indicating ownership by a vending company. I thought about asking them for it, but decided I don't really have the space for a dedicated machine at this time, especially one that I don't have any personal memories of.