2024 16 USC 450pp – Roger Williams National Memorial; acquisition of site

2023 16 USC 450pp – Roger Williams National Memorial; acquisition of site

2022 16 USC 450pp – Roger Williams National Memorial; acquisition of site

2021 16 USC 450pp – Roger Williams National Memorial; acquisition of site

2020 16 USC 450pp – Roger Williams National Memorial; acquisition of site

2018 16 USC 450pp – Roger Williams National Memorial; acquisition of site

2017 16 USC 450pp – Roger Williams National Memorial; acquisition of site

2015 16 USC 450pp – Roger Williams National Memorial; acquisition of site

2014 16 USC 450pp – Roger Williams National Memorial; acquisition of site

2013 16 USC 450pp – Roger Williams National Memorial; acquisition of site

2012 16 USC 450pp – Roger Williams National Memorial; acquisition of site

2010 16 USC 450pp – Roger Williams National Memorial; acquisition of site