| 2025 | Kohler Trust for Preservation | 990 | Trustee | 0.1 | $0 | $0 | View return |
| 2025 | Aldo Leopold Foundation Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2025 | Rdk Foundation 000012103000 | 990PF | Co-Trustee | 2 | $0 | - | View return |
| 2024 | Kohler Trust for Preservation | 990 | Trustee | 0.1 | $0 | $0 | View return |
| 2024 | Rdk Foundation 000012103000 | 990PF | Co-Trustee | 2 | $0 | - | View return |
| 2024 | Missouri Parks Association | 990 | Editor | 2 | $0 | $0 | View return |
| 2024 | Aldo Leopold Foundation Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2024 | L-A-D Foundation Inc. | 990PF | Past President | 6 | $0 | $0 | View return |
| 2023 | Kohler Trust for Preservation | 990 | Trustee | 0.1 | $0 | $0 | View return |
| 2023 | Missouri Parks Association | 990 | Editor | 3 | $0 | $0 | View return |
| 2023 | Rdk Foundation 000012103000 | 990PF | Co-Trustee | 2 | $0 | - | View return |
| 2023 | Aldo Leopold Foundation Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2023 | L-A-D Foundation Inc. | 990PF | President | 15 | $0 | $0 | View return |
| 2022 | Kohler Trust for Preservation | 990 | Trustee | 0.1 | $0 | $0 | View return |
| 2022 | L-A-D Foundation Inc. | 990PF | President | 15 | $0 | $0 | View return |
| 2022 | Aldo Leopold Foundation Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2022 | Rdk Foundation 000012103000 | 990PF | Co-Trustee | 2 | $0 | - | View return |
| 2022 | Missouri Parks Association | 990 | Editor | 8 | $0 | $0 | View return |
| 2021 | Kohler Trust for Preservation | 990 | Secretary/Trustee | 0.1 | $0 | $0 | View return |
| 2021 | Rdk Foundation 000012103000 | 990PF | Co-Trustee | 2 | $0 | - | View return |
| 2021 | Missouri Parks Association | 990 | Editor | 10 | $0 | $0 | View return |
| 2021 | Aldo Leopold Foundation Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2021 | L-A-D Foundation Inc. | 990PF | President | 15 | $0 | $0 | View return |
| 2021 | Missouri Parks Association | 990 | Editor | 10 | $0 | $0 | View return |
| 2020 | Kohler Trust for Preservation | 990 | Secretary/Trustee | 0.1 | $0 | $0 | View return |
| 2020 | Aldo Leopold Foundation Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2020 | Missouri Parks Association | 990 | Editor | 5 | $0 | $0 | View return |
| 2020 | L-A-D Foundation Inc. | 990PF | President | 20 | $0 | $0 | View return |
| 2019 | Kohler Trust for Preservation | 990 | Secretary/Trustee | 0.1 | $0 | $0 | View return |
| 2019 | Missouri Parks Association | 990 | Editor | 5 | $0 | $0 | View return |
| 2019 | Aldo Leopold Foundation Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2018 | Kohler Trust for Preservation | 990 | Secretary/Trustee | 0.1 | $0 | $0 | View return |
| 2018 | Missouri Parks Association | 990 | Editor | 15 | $0 | $0 | View return |
| 2017 | Kohler Trust for Preservation | 990 | Secretary/Trustee | 0.1 | $0 | $0 | View return |
| 2017 | Missouri Parks Association | 990 | Editor | 15 | $0 | $0 | View return |
| 2016 | Kohler Trust for Preservation | 990 | Secretary/Trustee | 0.1 | $0 | $0 | View return |
| 2016 | Missouri Parks Association | 990 | Editor | 15 | $0 | $0 | View return |
| 2016 | Aldo Leopold Foundation Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2016 | Conservation Federation of Missouri | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | Kohler Trust for Preservation | 990 | Secretary/Trustee | 0.1 | $0 | $0 | View return |
| 2015 | Aldo Leopold Foundation Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | Missouri Parks Association | 990 | Editor | 4 | $0 | $0 | View return |
| 2015 | Conservation Federation of Missouri | 990 | Director | 1 | $0 | $0 | View return |
| 2015 | L-A-D Foundation Inc. | 990PF | Vice-President | 0.25 | $0 | $0 | View return |
| 2014 | Kohler Trust for Preservation | 990 | Secretary/Trustee | 0.1 | $0 | $0 | View return |
| 2014 | Missouri Parks Association | 990 | Ed | 4 | $0 | $0 | View return |
| 2014 | Aldo Leopold Foundation Inc. | 990 | Director | 1 | $0 | $0 | View return |
| 2014 | L-A-D Foundation Inc. | 990PF | Vice-President | 0.15 | $0 | $0 | View return |
| 2013 | Missouri Parks Association | 990 | Ed | 4 | $0 | $0 | View return |
| 2012 | L-A-D Foundation Inc. | 990PF | Vice-President | 0.15 | $0 | $0 | View return |
| 2011 | L-A-D Foundation Inc. | 990PF | Vice-President | 0.15 | $0 | $0 | View return |
| 2010 | L-A-D Foundation Inc. | 990PF | Director | 0.15 | $0 | $0 | View return |
| 2009 | L-A-D Foundation Inc. | 990PF | Director | 0.15 | $0 | $0 | View return |