| 1 | QLSC | QUALITY ENTERPRISES USA CORPORATION | | | SCAC4 |
| 2 | QLSI | QUALITY LOGISTICS SYSTEMS INC | | | SCAC4 |
| 3 | QLSN | QUALITY LOGISTICS SERVICES INC | | | SCAC4 |
| 4 | QLSX | General American Transportation Corp. | 7/1937-1/1945 | | NAKINA |
| 5 | QLSX | Quaker City Live Stock Express (General American Tank Car Corp.) | 7/1935 | | NAKINA |
| 6 | QLSX | Quaker City Live Stock Express | 7/1930-7/1932 | | NAKINA |
| 7 | QLSX | Quaker City Live Stock Express (General American Transportation Corp.) | Apr-38 | | NRHS |
| 8 | QLSX | QUAKER CITY LIVE STOCK EXPRESS (GENERAL AMERICAN TRANSPORTATION CORP.) | | | PWRC |
