N.Y. Debt. & Cred. Law § 62
A consenting creditor, residing without the state, and within the United States, must annex to his consent the original accounts, or sworn copies thereof, and the original specialties or other written securities, if any, upon which his demand arose or depends. Provided, however, that when such original specialties, or other written securities, are lost, such fact must be stated as a reason for not annexing thereto the consent, and the fact of the loss, and the manner of the loss thereof must be stated in the affidavit of the creditor to the best of his knowledge, or must be otherwise proved by affidavit to the satisfaction of the court; and the court may thereupon, in such case or proceeding, by its order, dispense with the annexing to such consent of the original specialties or other written securities.
N.Y. Debt. and Cred. Law § 62