| Name | Deductibility Code |
| Elizabeth Bennett Rice Fund | -- |
| Friends of the Wentworth Inc. | -- |
| Great Island Garden Club | -- |
| Grennon Family Charitable Foundation | 4 |
| Linnell Foundation | 4 |
| Martin I Elkin and Pauline G Elkin Charitable Tr | 4 |
| New Castle Historical Society | -- |