N.C. Gen. Stat. § 121-55: Museum or archives repository's lien for expenses.

(a) When the lender of loaned property is known, a museum or archives repository may charge the lender expenses for the reasonable care of loaned property unclaimed after the expiration date of the loan.

(b) When the lender of loaned property is unknown, a museum or archives repository may place a lien against the value of specific loaned property for expenses reasonably necessary to protect the loaned property from ordinary decay and deterioration due to natural causes, theft, or vandalism. (2015-218, s. 2.)