1 | TPDX | Tennessee Products Corp. | 7/1937-4/1947 | | NAKINA |
2 | TPDX | Tennessee Products & Chemical Corp. | 1/1950-7/1954; eliminated 4/1957 | | NAKINA |
3 | TPDX | Union Tank Car Co. | added 4/1957; 10/1957-4/1970; eliminated 7/1973 | | NAKINA |
4 | TPDX | Tennessee Products Corp. | Apr-38 | | NRHS |
5 | TPDX | Tennessee Products & Chemical Corp. | 1/52; eliminated 4/57 | | NRHS |
6 | TPDX | Union Tank Car Co. | added 4/57; 10/57-4/70; eliminated 7/73 | | NRHS |
7 | TPDX | UNION TANK CAR CO. (TENNESSEE PRODUCTS & CHEMICAL CORP.) | | | PWRC |
8 | TPDX | TTX COMPANY | | | SCAC4 |