Yeah, you're already here!
Seriously, if it were that easy, just type in the VIN number and all the past owners come up, we'd all be doing it. It's just not that easy. Be patient, keep looking and keep digging. And be patient. We owned our Pontiac for probably 10 years before we found out where it was from, and it was almost accidental that we found out
I saw the earlier photo, which had "Niagara" on it, does that help any? Do you know anyone associated with that outfit? Are there any other clues?
Did I mention, be patient?