2024 16 USC 410cccc-3 – Golden Spike National Historical Park

2023 16 USC 410cccc-3 – Golden Spike National Historical Park

2022 16 USC 410cccc-3 – Golden Spike National Historical Park

2021 16 USC 410cccc-3 – Golden Spike National Historical Park

2020 16 USC 410cccc-3 – Golden Spike National Historical Park