| MICHIGAN | HTL | HOUGHTON LAKE ROSCOMMON CO-BLODGETT MEML |
| NEVADA | HTH | HAWTHORNE INDUSTRIAL |
| NEW YORK | HTO | EAST HAMPTON |
| OHIO | HTW | CHESAPEAKE-HUNTINGTON W VA LAWRENCE CO AIRPARK |
| WEST VIRGINIA | HTS | HUNTINGTON TRI-STATE-MILTON J. FERGUSON FLD |
| WEST VIRGINIA | HTW_1 | HUNTINGTON-CHESAPEAKE, OH LAWRENCE CO AIRPARK |