| 2024 | The Frances and Townsend Burden | 990PF | President | 1 | $0 | $0 | View return |
| 2024 | The Land Trust of Virginia Inc | 990 | Vice Chair | 5 | $0 | $0 | View return |
| 2024 | Manassas Battlefiled Trust | 990 | Board Member | 25 | $0 | $0 | View return |
| 2024 | Shenandoah Valley Battlefields | 990 | Board Member | 1 | $0 | $0 | View return |
| 2023 | The Frances and Townsend Burden | 990PF | President | 1 | $0 | $0 | View return |
| 2023 | The Land Trust of Virginia Inc | 990 | Chair | 5 | $0 | $0 | View return |
| 2023 | Manassas Battlefiled Trust | 990EZ | Board Member | 0.25 | $0 | $0 | View return |
| 2023 | Helen Clay Frick Foundation-Tr | 990PF | Director | 0 | $0 | - | View return |
| 2023 | Shenandoah Valley Battlefields | 990 | Board Member | 1 | $0 | $0 | View return |
| 2022 | The Frances and Townsend Burden | 990PF | President | 1 | $0 | $0 | View return |
| 2022 | Virginia Piedmont Heritage Area | 990 | Director | 3 | $0 | $0 | View return |
| 2022 | The Land Trust of Virginia Inc | 990 | Chair | 5 | $0 | $0 | View return |
| 2022 | Helen Clay Frick Foundation-Tr | 990PF | Director | 0 | $0 | - | View return |
| 2022 | Manassas Battlefiled Trust | 990EZ | Board Member | 0.25 | $0 | $0 | View return |
| 2022 | Shenandoah Valley Battlefields | 990 | Board Member | 1 | $0 | $0 | View return |
| 2021 | The Frances and Townsend Burden | 990PF | President | 1 | $0 | $0 | View return |
| 2021 | The Land Trust of Virginia Inc | 990 | Chair | 5 | $0 | $0 | View return |
| 2021 | Helen Clay Frick Foundation-Tr | 990PF | Director | 0 | $0 | - | View return |
| 2020 | The Land Trust of Virginia Inc | 990 | Chair | 5 | $0 | $0 | View return |
| 2020 | The Frances and Townsend Burden | 990PF | President | 1 | $0 | $0 | View return |
| 2019 | Oatlands Inc | 990 | Honorary Director | 1 | $0 | $0 | View return |
| 2019 | The Frances and Townsend Burden | 990PF | President | 1 | $0 | $0 | View return |
| 2019 | The Land Trust of Virginia Inc | 990 | Director | 1 | $0 | $0 | View return |
| 2018 | The Frances and Townsend Burden | 990PF | President | 1 | $0 | $0 | View return |
| 2018 | Oatlands Inc | 990 | Honorary Director | 1 | $0 | $0 | View return |
| 2018 | Shenandoah Valley Battlefields | 990 | Trustee | 1 | $0 | $0 | View return |
| 2018 | The Frances and Townsend Burden | 990PF | President | 1 | $0 | $0 | View return |
| 2017 | The Frances and Townsend Burden | 990PF | President | 1 | $0 | $0 | View return |
| 2017 | The Loudoun Agricultural & Chemical Institute Foundation Inc | 990EZ | Director | 1 | $0 | - | View return |
| 2017 | Oatlands Inc | 990 | Honorary Director | 1 | $0 | $0 | View return |
| 2017 | Shenandoah Valley Battlefields | 990 | Trustee | 1 | $0 | $0 | View return |
| 2016 | Oatlands Inc | 990 | Honorary Director | 1 | $0 | $0 | View return |
| 2016 | The Frances and Townsend Burden | 990PF | President | 1 | $0 | - | View return |
| 2016 | Virginia Piedmont Heritage Area | 990 | President | 5.25 | $0 | $0 | View return |
| 2016 | The Hortulus Farm Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2016 | The Loudoun Agricultural & Chemical Institute Foundation Inc | 990EZ | Director | 1 | $0 | - | View return |
| 2016 | Hortulus Farm Foundation Museum | 990PF | Director | 1 | $0 | $0 | View return |
| 2016 | Shenandoah Valley Battlefields | 990 | Trustee | 1 | $0 | $0 | View return |
| 2015 | The Frances and Townsend Burden | 990PF | President | 1 | $0 | - | View return |
| 2015 | The Loudoun Agricultural & Chemical Institute Foundation Inc | 990EZ | Director | 1 | $0 | - | View return |
| 2015 | Hortulus Farm Foundation Museum | 990PF | Director | 1 | $0 | $0 | View return |
| 2015 | The Hortulus Farm Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2015 | Oatlands Inc | 990 | Honorary Director | 1 | $0 | $0 | View return |
| 2015 | Shenandoah Valley Battlefields | 990 | Trustee | 1 | $0 | $0 | View return |
| 2014 | The Loudoun Agricultural & Chemical Institute Foundation Inc | 990EZ | Director | 1 | $0 | - | View return |
| 2014 | Oatlands Inc | 990 | Honorary Director | 1 | $0 | $0 | View return |
| 2014 | Hortulus Farm Foundation Museum | 990PF | Director | 1 | $0 | $0 | View return |
| 2014 | The Hortulus Farm Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2014 | Shenandoah Valley Battlefields | 990 | Trustee | 1 | $0 | $0 | View return |
| 2013 | The Loudoun Agricultural & Chemical Institute Foundation Inc | 990EZ | Director | 1 | $0 | - | View return |
| 2013 | Oatlands Inc | 990 | Honorary Director | 1 | $0 | $0 | View return |
| 2013 | Hortulus Farm Foundation Museum | 990PF | Director | 1 | $0 | $0 | View return |
| 2013 | The Hortulus Farm Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2012 | The Hortulus Farm Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2012 | Hortulus Farm Foundation Museum | 990PF | Director | 1 | $0 | $0 | View return |
| 2011 | The Hortulus Farm Foundation | 990PF | Director | 1 | $0 | $0 | View return |
| 2011 | Hortulus Farm Foundation Museum | 990PF | Director | 1 | $0 | $0 | View return |
| 2010 | The Hortulus Farm Foundation | 990PF | Director | 1 | $0 | $0 | View return |