| ALASKA | MRI | ANCHORAGE MERRILL FLD |
| CALIFORNIA | MRY | MONTEREY PENINSULA |
| NORTH CAROLINA | MRN | MORGANTON FOOTHILLS RGNL |
| NORTH CAROLINA | MRH | BEAUFORT MICHAEL J. SMITH FLD |
| OHIO | MRT | MARYSVILLE UNION CO |
| TENNESSEE | MRC | COLUMBIA-MOUNT PLEASANT MAURY CO |
| TEXAS | MRF | MARFA MUNI |
| WEST VIRGINIA | MRB | MARTINSBURG EASTERN WEST VIRGINIA RGNL-SHEPHERD FLD |
| WISCONSIN | MRJ | MINERAL POINT IOWA CO |