| Name | Deductibility Code |
| Brandywiners Ltd. | -- |
| Carpenter Foundation Inc. | 4 |
| Coroallegro Inc. | -- |
| Crystal Trust Ua Dtd 12-25-47 Irenee Dupont Jr Ttee | 4 |
| Delaware Preservation Fund Inc. | -- |
| Ellen and Alan Levin Family Foundation | 4 |
| Friends of Wilmington Parks Inc. | -- |
| Hompe -robert & Beatrice- foundation | 4 |
| Mt. Cuba Astronomical Foundation | 4 |
| Mt. Cuba Astronomical Observatory Inc. Hillside Mill Road | -- |
| Pamet River Foundation | 4 |
| Peace Work Ltd. | -- |
| Scooter-Boxie Foundation | 4 |
| Vinton Family Foundation Tr | 4 |
| Wilmington Fire Foundation | 4 |