Neb. Rev. Stat. § 2-220.04: Neb. Rev. Stat. § 2-220.04

If cash or certified check is deposited with the Nebraska State Fair Board, a county agricultural society, or a county fair board under section 2-220.01 , such deposit shall be returned to the person or company making the deposit within sixty days after the completion of the last performance of the contract unless a written, signed, and verified complaint has been filed within such time.