| 2024 | Field Museum of Natural History | 990 | Vice Chair, Audit | 3 | $0 | $0 | View return |
| 2024 | Forest Park Preservation Corporation | 990EZ | Director | 0.5 | $0 | $0 | View return |
| 2024 | National Recreation Foundation Inc C/O Sophia B Twichell | 990PF | Trustee Retired 11/24 | 1 | $0 | $0 | View return |
| 2024 | Winnie and Bob Crawford Family Foundation | 990PF | President/Treasurer | 1 | $0 | - | View return |
| 2024 | Lake Forest College | 990 | Trustee | 1 | $0 | $0 | View return |
| 2023 | Forest Park Preservation Corporation | 990EZ | Director | 0.5 | $0 | $0 | View return |
| 2023 | National Recreation Foundation Inc C/O Sophia B Twichell | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2023 | Field Museum of Natural History | 990 | Vice Chair, Audit | 3 | $0 | $0 | View return |
| 2023 | Winnie and Bob Crawford Family Foundation | 990PF | President/Treasurer | 1 | $0 | - | View return |
| 2023 | Lake Forest College | 990 | Trustee | 1 | $0 | $0 | View return |
| 2023 | Ravinia Festival Association | 990 | Trustee | 0.5 | $0 | $0 | View return |
| 2022 | Field Museum of Natural History | 990 | Vice Chair, Audit | 3 | $0 | $0 | View return |
| 2022 | Forest Park Preservation Corporation | 990EZ | Director | 0.5 | $0 | $0 | View return |
| 2022 | Winnie and Bob Crawford Family Foundation | 990PF | President/Treasurer | 1 | $0 | - | View return |
| 2022 | National Recreation Foundation Inc C/O Sophia B Twichell | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2022 | Lake Forest College | 990 | Trustee | 1 | $0 | $0 | View return |
| 2022 | Ravinia Festival Association | 990 | Trustee | 0.5 | $0 | $0 | View return |
| 2021 | National Recreation Foundation Inc C/O Sophia B Twichell | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2021 | Field Museum of Natural History | 990 | Vice Chair, Audit | 3 | $0 | $0 | View return |
| 2021 | Forest Park Preservation Corporation | 990EZ | Director | 0 | $0 | $0 | View return |
| 2021 | Winnie and Bob Crawford Family Foundation | 990PF | President/Treasurer | 0 | $0 | - | View return |
| 2021 | Lake Forest College | 990 | Trustee | 1 | $0 | $0 | View return |
| 2021 | Ravinia Festival Association | 990 | Trustee | 0.5 | $0 | $0 | View return |
| 2020 | National Recreation Foundation Inc C/O Sophia B Twichell | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2020 | Forest Park Preservation Corporation | 990 | Director | 1 | $0 | $0 | View return |
| 2020 | Field Museum of Natural History | 990 | Vice Chair, Audit | 3 | $0 | $0 | View return |
| 2020 | Winnie and Bob Crawford Family Foundation | 990PF | President/Treasurer | 0 | $0 | - | View return |
| 2020 | Ravinia Festival Association | 990 | Trustee | 0.5 | $0 | $0 | View return |
| 2019 | Winnie and Bob Crawford Family Foundation | 990PF | President/Treasurer | 0 | $0 | - | View return |
| 2019 | National Recreation Foundation Inc C/O Sophia B Twichell | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2019 | Forest Park Preservation Corporation | 990 | Director | 1 | $0 | $0 | View return |
| 2019 | Field Museum of Natural History | 990 | Vice Chair, Audit | 3 | $0 | $0 | View return |
| 2019 | Ravinia Festival Association | 990 | Trustee | 0.5 | $0 | $0 | View return |
| 2018 | National Recreation Foundation Inc C/O Sophia B Twichell | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2018 | Field Museum of Natural History | 990 | Board Member | 1 | $0 | $0 | View return |
| 2018 | Ravinia Festival Association | 990 | Trustee | 0.5 | $0 | $0 | View return |
| 2017 | Field Museum of Natural History | 990 | Board Member | 1 | $0 | $0 | View return |
| 2017 | National Recreation Foundation Inc C/O Sophia B Twichell | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2017 | Ravinia Festival Association | 990 | Trustee | 0.5 | $0 | $0 | View return |
| 2016 | Field Museum of Natural History | 990 | Board Member | 1 | $0 | $0 | View return |
| 2016 | National Recreation Foundation Inc C/O Sophia B Twichell | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2016 | National Recreation Foundation Inc C/O Sophia B Twichell | 990PF | Trustee | 1 | $0 | $0 | View return |
| 2015 | Field Museum of Natural History | 990 | Board Member | 1 | $0 | $0 | View return |
| 2015 | Chicagoland Chamber of Commerce | 990 | Director | 0.1 | $0 | $0 | View return |
| 2014 | Field Museum of Natural History | 990 | Board Member | 1 | $0 | $0 | View return |
| 2014 | Chicagoland Chamber of Commerce | 990 | Director | 0.1 | $0 | $0 | View return |
| 2013 | Field Museum of Natural History | 990 | Board Member | 1 | $0 | $0 | View return |
| 2013 | Chicagoland Chamber of Commerce | 990 | Director | 0.1 | $0 | $0 | View return |