Nebraska Revised Statute 51-710
51-710.
Records; maintenance and retention.
Beginning on July 19, 1996, a museum shall at a minimum maintain and retain the following records, either as originals or accurate copies, for a period of not less than twenty-five years:
(1) A notice of intent to preserve an interest in property, if any;
(2) The loan agreement, if any;
(3) A receipt or ledger for property delivered to an owner or claimant; and
(4) Records containing the following information, as available, for property in the museum's possession:
(a) The lender's name, address, and telephone number;
(b) The claimant's name, address, and telephone number;
(c) The donor's name, address, and telephone number;
(d) The seller's name, address, and telephone number;
(e) The nature and terms of the transaction (loan for specified term, loan for unspecified term, donation, purchase, etc.); and
(f) The beginning date of the loan period or transaction date.