| Name | Deductibility Code |
| Calumet Homestead Auxiliary Inc. | -- |
| Calvary Chapel Chilton Inc. | -- |
| Langenfeld Foundation Inc. | 4 |
| New Holstein Cemetery Association | 6 |
| New Holstein Historical Society Inc. | -- |
| Paul W Langenfeld Foundation | 4 |
| Robert J Stellpflug Memorial Scholarship Fund Inc. | -- |
| St. Martins Heritage Park - Charlestown Inc. | -- |
| Thomas J Lynch Trust | 4 |