N.J.R.E. 1005 Public Records

The proponent may use a copy to prove the contents of an official record, or of a writing that was recorded or filed in a public office as authorized by law, if these conditions are met:

(a) the record or writing is otherwise admissible;

(b) and the copy is certified as correct in accordance with Rule 902, or is testified to be correct by a witness who has compared it with the original.

If no such copy can be obtained by reasonable diligence, then the proponent may use other evidence to prove the contents.