Sheets of Liberia, 1978
| Issuer | Date | Desc | State | ||
| - |  |
Liberia | 1/6/1978 | Progress of Aviation, sheet of 1 type | |
| - |  |
Liberia | 3/9/1978 | empty sheet (#34249) | incomplete |
| - | no image | Liberia | 6/1/1978 | empty sheet (#34250) | incomplete |
| - |  |
Liberia | 6/12/1978 | empty sheet (#34251) | incomplete |
| - |  |
Liberia | 12/8/1978 | empty sheet (#34252) | incomplete |