Versions of Nebraska Statutes 81-8,313. Semiquincentennial; point of contact; official observance; cooperation required on LawServer 2023 Nebraska Statutes 81-8,313. Semiquincentennial; point of contact; official observance; cooperation required 2022 Nebraska Statutes 81-8,313. Semiquincentennial; point of contact; official observance; cooperation required 2021 Nebraska Statutes 81-8,313. Semiquincentennial; point of contact; official observance; cooperation required