| 1 | IERR | Indiana Eastern Rd. LLC | added 10/2005; eliminated 1/2008 | | NAKINA |
| 2 | IERR | INDIANA EASTERN RAILROAD, LLC. | | | PWRC |
| 3 | IERR | INDIANA EASTERN RAILROAD LLC | | | SCAC4 |
| 4 | IERT | INDIANA EASTERN RAILROAD & TRANSPORTATION, INC. | | | PWRC |
| 5 | IERX | General American Transportation Corp. | 1/1950-1/1952; eliminated 10/1953 | | NAKINA |
| 6 | IERX | Inland-Empire Refineries Inc. | 1/1941-4/1947 | | NAKINA |
| 7 | IERX | General American Transportation Corp. | 1/52; eliminated 10/53 | | NRHS |
| 8 | IERX | *INLAND-EMPIRE REFINERIES, INC. | | | PWRC |
| 9 | IERX | *GENERAL AMERICAN TRANSPORTATION CORP | | | PWRC |
