Sheets of United States, 1991
| Issuer | Date | Desc | State | ||
| X |  |
United States | 1991 | 1941: A World at War, sheet of 10 types | incomplete |
| - |  |
United States | 1991 | empty sheet (#625) | incomplete |
| - |  |
United States | 1991 | empty sheet (#626) | incomplete |
| - |  |
United States | 1991 | empty sheet (#627) | incomplete |
| - |  |
United States | 1991 | empty sheet (#628) | incomplete |
| - | no image | United States | 1991 | empty sheet (#629) | incomplete |
| - |  |
United States | 1991 | empty sheet (#630) | incomplete |
| - |  |
United States | 1991 | empty sheet (#631) | incomplete |
| - |  |
United States | 1991 | empty sheet (#632) | incomplete |
| - |  |
United States | 1991 | empty sheet (#633) | incomplete |
| - |  |
United States | 1991 | empty sheet (#634) | incomplete |
| X |  |
United States | 1991 | sheet of 10 types | |
| - |  |
United States | 1991 | empty sheet (#636) | incomplete |