Pyroceram:
Corning Ware Pyroceram is plentiful and cheap here in NE Iowa - Iowa housewives must have loved the stuff back in the day.
Working just from thrift stores, I've amassed a collection I don't think I could have found when I lived in Atlanta. I have even scored some of the rarer pieces, like the saucemaker, the 5-liter casserole and the Broil 'n Serve platter.
I've had great luck finding serving cradles for each piece, plus handles and lids for everything.
Now, Farberware - my other cookware love - is an entirely different story. VERY hard to find here. I don't think Black's (the major department store in Waterloo, now defunct) must have carried it; I see a fair amount of Process Patent Revere Ware, so maybe that's what Black's sold.