N.Y. Civil Practice Law & Rules § 4522: Ancient filed maps, surveys and records affecting real property

Rule 4522. Ancient filed maps, surveys and records affecting real

property. All maps, surveys and official records affecting real

property, which have been on file in the state in the office of the

register of any county, any county clerk, any court of record or any

department of the city of New York for more than ten years, are prima

facie evidence of their contents.