N.H. Rev. Stat. § 396:2
Notice of any order of the commissioner made hereunder shall be sufficient if served on the treasurer or cashier or other person in charge of the business of the institution affected and on one other officer or a trustee or director thereof, but any order relating to the withdrawal, payment, or reception of deposits shall, in addition thereto, be posted in that part of the institution commonly used by its depositors. Any person may serve such notice. The commissioner may give such further notice of any such order as he deems desirable. Notice of any such order relating to the payment of accounts other than deposits may be given creditors by registered mail and a return receipt signed by or for a creditor shall be sufficient evidence of receipt thereof.
RSA 396:2
1933, 114:1. RL 317:2.