Sheets of United States, 2012
| Issuer | Date | Desc | State | ||
| - | no image | United States | 4/21/2012 | 20th Century Poets, sheet of 10 types | all added |
| - |  |
United States | 4/24/2012 | Civil War 1862, sheet of 2 types | |
| - |  |
United States | 6/1/2012 | empty sheet (#3035) | incomplete |
| - |  |
United States | 8/18/2012 | The War of 1812, empty sheet (#45219) | incomplete |
| - |  |
United States | 10/1/2012 | Earthscapes, sheet of 15 types | |
| - |  |
United States | 11/30/2012 | Lady Bird Johnson Centennial, sheet of 6 types |