Metal To Metal Squeak

Not A Mopar -- It's a 64 Falcon Sprint. I know, the problem is because it's a Ford. -- There's a metal to metal squeak, when hitting bumps, even small ones, on the road. It sound like seat springs or similar, but I have eliminated that. -- Any ideas ???

Door strikers possibly?
I know if mine got real dry on my Falcon they squeaked.
Same with my Dart.