Mig 21 @ OSH

I'm going to ask the collective wisdom:
I remember in my comings and goings at OSH every summer a collection of
classic jets, including a Mig 21. (but I remember a Hunter, Mig 15,
Fouga?) Usually parked over by the warbird area. Are they owned by EAA?
Are they airworthy? Where are they kept?
I asked a person at the counter of the museum about 3 months ago, and
they of course didn't have the first clue as to what I was talking
about...
More curious than anything else. I vaguely remember something about EAA
coming into this collection but then nothing else.

Ryan
Madison, WI