| 1 | UTLX | Union Tank Line Co. (Union Tank Car Co.) | 8/1920-7/1935 | | NAKINA |
| 2 | UTLX | Union Tank Car Co. | 7/1937-7/1965 | | NAKINA |
| 3 | UTLX | Union Tank Line Co. (Union Tank Car Co.) | 10/1966 | | NAKINA |
| 4 | UTLX | Union Tank Car Co. | 4/1970-7/2005 | | NAKINA |
| 5 | UTLX | Union Tank Car Co. | 4/38-7/65 | | NRHS |
| 6 | UTLX | Union Tank Line Co. (Union Tank Car Co.) | Oct-66 | | NRHS |
| 7 | UTLX | Union Tank Car Co. | 4/70-7/2000 | | NRHS |
| 8 | UTLX | (UTCX) UNION TANK CAR CO | | | PWRC |
| 9 | UTLX | Union Tank Car | | | RSRV |
| 10 | UTLX | UNION TANK CAR COMPANY | | | SCAC4 |
| 11 | UTLX | Union Tank Car Co. | | USA | TRAFFIC |
