Bernie,
For local plan sources I'd start with the Maritime Museum in Havre de Grace, MD. They are on the web somewhere. If they don't have something, try the Mystic Seaport Museum in Mystic, Conn. They seem to have acquired plans to nearly every typ of wooden boat or ship that exists. With your credentials getting a set wouldn't be a problem.
As to ship type, the picture makes it hard to know if the mast in front is taller or shorther then the mast in the rear - or if they are the same height. When it come to two-masted sailing vessels that's the first determining characteristic.