Property Records for Vacant Building

[Lucas Hammer]

So there's a vacant building near where I'm currently living and it's in a location that I'd love to own, so I looked up the property. I was able to find the most recent deed for the property from 2010. Since then there have been two "Assignments" and one Memorandum for the property. Would the most recent deed be the person I'd need to try to track down in order to ask if they'd be interested in selling or would it be based on one of the assignments? I don't have the capital yet in order to purchase the building, but I'm wanting to throw some hooks out and see what comes back. Thanks!