A friend just gave me her late aunt's copper bottomed Revere ware. (My friend doesn't cook.) The bottoms say made in Riverside CA. A little googling told me that Revere ware was first made in NY and now is not made in the US at all. I also read some complaints about the newer ones being poor quality. These seem nice and heavy. I especially like the double boiler. For no particular reason, I'm curious about the history of these pans. Any ideas?