Door trim clips needed

While working on a customer's '68 Polara, my technician lost one of the clips for the metal rod that connects to the door handle. And, for whatever reason, he was pushing against the upper chrome piece and snapped one the plastic clips that holds the chrome trim to the door. I've circled the clips and trim I need the clips for. Any ideas on where to get these clips?

Also when we removed the interior door panels we noticed some of the clips were missing. It looks like there are 2...

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