Sheets of Cook Islands, 1975
| Issuer | Date | Desc | State | ||
| - |  |
Cook Islands | 7/15/1975 | empty sheet (#19155) | incomplete |
| - |  |
Cook Islands | 12/1/1975 | empty sheet (#19156) | incomplete |
| - | no image | Cook Islands | 12/15/1975 | empty sheet (#75729) | incomplete |
| - | no image | Cook Islands | 12/15/1975 | empty sheet (#75730) | incomplete |
| - | no image | Cook Islands | 12/15/1975 | empty sheet (#75731) | incomplete |
| - | no image | Cook Islands | 12/15/1975 | empty sheet (#75732) | incomplete |
| - | no image | Cook Islands | 12/15/1975 | empty sheet (#75733) | incomplete |