| 2024 | National Museum of Racing Inc. | 990 | Vice Chairman | 0 | $0 | $0 | View return |
| 2024 | Margaret Dorrance Strawbridge Fdn of Pa 1 Inc. | 990PF | President/Secretary/Direct | 0.5 | $0 | $0 | View return |
| 2023 | Margaret Dorrance Strawbridge Fdn of Pa 1 Inc. | 990PF | President/Secretary/Direct | 0.5 | $0 | $0 | View return |
| 2023 | National Museum of Racing Inc. | 990 | Vice Chairman | 0 | $0 | $0 | View return |
| 2022 | National Museum of Racing Inc. | 990 | Vice Chairman | 0 | $0 | $0 | View return |
| 2022 | Margaret Dorrance Strawbridge Fdn of Pa 1 Inc. | 990PF | President/Secretary/Direct | 0.5 | $0 | $0 | View return |
| 2021 | Margaret Dorrance Strawbridge Fdn of Pa 1 Inc. | 990PF | President/Secretary/Direct | 0.5 | $0 | $0 | View return |
| 2021 | National Museum of Racing Inc. | 990 | Vice President | 0 | $0 | $0 | View return |
| 2020 | National Museum of Racing Inc. | 990 | Trustee | 0 | $0 | $0 | View return |
| 2020 | Margaret Dorrance Strawbridge Fdn of Pa 1 Inc. | 990PF | President/Secretary/Direct | 0.5 | $0 | $0 | View return |
| 2019 | Margaret Dorrance Strawbridge Fdn of Pa 1 Inc. | 990PF | President/Secretary/Direct | 0.5 | $0 | $0 | View return |
| 2019 | National Museum of Racing Inc. | 990 | Trustee | 0 | $0 | $0 | View return |
| 2018 | Margaret Dorrance Strawbridge Fdn of Pa 1 Inc. | 990PF | President/Secretary/Direct | 0.5 | $0 | $0 | View return |
| 2018 | National Steeplechase Museum Inc. | 990 | Director | 0 | $0 | $0 | View return |
| 2018 | National Museum of Racing Inc. | 990 | Trustee | 0 | $0 | $0 | View return |
| 2017 | Margaret Dorrance Strawbridge Fdn of Pa 1 Inc. | 990PF | President/Secretary/Direct | 0.5 | $0 | $0 | View return |
| 2017 | National Steeplechase Museum Inc. | 990 | Director | 0 | $0 | $0 | View return |
| 2017 | National Museum of Racing Inc. | 990 | Trustee | 0 | $0 | $0 | View return |
| 2016 | National Steeplechase Museum Inc. | 990 | Director | 0 | $0 | $0 | View return |
| 2016 | Margaret Dorrance Strawbridge Fdn of Pa 1 Inc. | 990PF | President/Secretary/Direct | 0.5 | $0 | $0 | View return |
| 2016 | National Museum of Racing Inc. | 990 | Trustee | 0 | - | - | View return |
| 2015 | National Steeplechase Museum Inc. | 990 | Director | 0 | $0 | $0 | View return |
| 2015 | National Museum of Racing Inc. | 990 | Trustee | 0 | - | - | View return |
| 2015 | Margaret Dorrance Strawbridge Fdn of Pa 1 Inc. | 990PF | President/Secretary/Direct | 0.5 | $0 | $0 | View return |
| 2014 | National Steeplechase Museum Inc. | 990 | Director | 0 | $0 | $0 | View return |
| 2014 | Margaret Dorrance Strawbridge Fdn of Pa 1 Inc. | 990PF | President/Secretary/Direct | 0.5 | $0 | $0 | View return |
| 2013 | Margaret Dorrance Strawbridge Fdn of Pa 1 Inc. | 990PF | President/Secretary/Direct | 0.5 | $0 | $0 | View return |
| 2013 | National Steeplechase Museum Inc. | 990 | Director | 0 | $0 | $0 | View return |
| 2012 | Margaret Dorrance Strawbridge Fdn of Pa 1 Inc. | 990PF | President/Secretary/Direct | 0.5 | $0 | $0 | View return |
| 2011 | Margaret Dorrance Strawbridge Fdn of Pa 1 Inc. | 990PF | President/Secretary/Direct | 0.5 | $0 | $0 | View return |