Sheets of Cook Islands, 1976 incomplete
| Issuer | Date | Desc | State | ||
| - |  |
Cook Islands | 3/29/1976 | empty sheet (#19109) | incomplete |
| - | no image | Cook Islands | 5/3/1976 | empty sheet (#75734) | incomplete |
| - | no image | Cook Islands | 5/3/1976 | empty sheet (#75735) | incomplete |
| - | no image | Cook Islands | 5/3/1976 | empty sheet (#75736) | incomplete |
| - |  |
Cook Islands | 5/29/1976 | 200th Anniversary of the American Revolution, empty sheet (#19110) | incomplete |
| - |  |
Cook Islands | 7/6/1976 | empty sheet (#19111) | incomplete |
| - |  |
Cook Islands | 7/22/1976 | empty sheet (#19112) | incomplete |
| - |  |
Cook Islands | 10/12/1976 | empty sheet (#19113) | incomplete |
| - | no image | Cook Islands | 11/2/1976 | empty sheet (#75737) | incomplete |
| - | no image | Cook Islands | 11/2/1976 | empty sheet (#75738) | incomplete |
| - | no image | Cook Islands | 11/2/1976 | empty sheet (#75739) | incomplete |
| - | no image | Cook Islands | 11/2/1976 | empty sheet (#75740) | incomplete |
| - | no image | Cook Islands | 11/2/1976 | empty sheet (#75741) | incomplete |