| 1 | NHIX | Merchants Despatch Transportation Corp. | added 7/1962; 7/1965; eliminated 7/1966 | | NAKINA |
| 2 | NHIX | Northern Refrigerator Line, Inc. | 4/1947-4/1961; eliminated 7/1962 | | NAKINA |
| 3 | NHIX | Northern Refrigerator Line, Inc. | 1/52-4/61 | | NRHS |
| 4 | NHIX | Merchants Despatch Transportation Corp. | 7/65; eliminated 7/66 | | NRHS |
| 5 | NHIX | *NORTHERN REFRIGERATOR LINE INC. | | | PWRC |
| 6 | NHIX | *MERCHANTS DESPATCH TRANSPORTATION CORP. | | | PWRC |
