| 1 | NRTX | Northern Tank Car Line (Northern Refrigerator Line, Inc.) | 7/1930-1/1941 | | NAKINA |
| 2 | NRTX | Northern Tank Car Lines (Northern Refrigerator Line, Inc.) | Apr-38 | | NRHS |
| 3 | NRTX | NORTHERN TANK CAR LINES (NORTHERN REFRIGERATOR LINE, INC.) | | | PWRC |
| 4 | NRTX | Music City Star | | | RSRV |
| 5 | NRTX | REGIONAL TRANSPORTATION AUTHORITY-N | | | SCAC4 |
| 6 | NRTX | Music City Star | Nashville | USA | TRAFFIC |
