2024 16 USC 445b – Administration by National Park Service; powers and duties

2023 16 USC 445b – Administration by National Park Service; powers and duties

2022 16 USC 445b – Administration by National Park Service; powers and duties

2021 16 USC 445b – Administration by National Park Service; powers and duties

2020 16 USC 445b – Administration by National Park Service; powers and duties

2018 16 USC 445b – Administration by National Park Service; powers and duties

2017 16 USC 445b – Administration by National Park Service; powers and duties

2015 16 USC 445b – Administration by National Park Service; powers and duties

2014 16 USC 445b – Administration by National Park Service; powers and duties