I was wondering if a proof for trailers was required for Model Years 1973 or newer with an unladen weight of 1,000 lbs. or more?
either the NY State Certificate of Title and it must be the original or a certified copy ,or  acceptable proof of ownership from another state
I almost forgot to inquire about the Permit Application. What address should I send it to if I plan to do this by mail?
The address that you will need to send your documents and payment to is the NYS DMV Title Services Department of Motor Vehicles, 6 Empire State Plaza, Albany, NY 12228-0331.