| 1 | NRCX | Northern Rail Car Corp. | added 7/1987; eliminated 7/1991; 1/1994-7/2005 (not listed) | | NAKINA |
| 2 | NRCX | Northern Refrigerator Car Co. (Northern Refrigerator Line, Inc.) | 7/1930-1/1941 | | NAKINA |
| 3 | NRCX | Northern Refrigerator Car Co. | 7/1923 | | NAKINA |
| 4 | NRCX | Northern Rail Car Corp. | added 7/87; eliminated 7/91; 1/94-7/2000 | | NRHS |
| 5 | NRCX | Northern Refrigerator Car Co. (Northern Refrigerator Line, Inc.) | Apr-38 | | NRHS |
| 6 | NRCX | *NORTHERN REFRIGERATOR LINE, INC. [NORTHERN REFRIGERATOR CAR CO.] | | | PWRC |
| 7 | NRCX | +NORTHERN RAIL CAR CORP. | | | PWRC |
| 8 | NRCX | Northern Rail Car Corporation | | | RSRV |
| 9 | NRCX | NORTHERN RAIL CAR CORP. | | | SCAC4 |
