| Abbreviation | Definition |
|---|---|
| GYLX | Gaylord Container Corporation |
| HABX | Habco International |
| HABX | Habco International Incorporated |
| HALX | Holland American Line |
| HAMU | Costa Line |
| HANU | Hansa Line |
| HANX | L. Hansens Forwarding |
| HANX | L. Hansen's Forwarding |
| HAPX | Helm-Atlantic Leasing |
| HARX | GE Rail Services Corporation |
| HARX | General Electric Railcar Services Corporation |
| HASJ | Have A Safe Journey |
| HATU | H A T Enterprises |
| HATU | H A T Enterprises Incorporated |
| HATX | Helm- Atlantic Associates L. P. |
| HATX | Helm Financial Corporation |
| HATZ | H A T Enterprises |
| HATZ | H A T Enterprises Incorporated |
| HB | Hampton and Branchville Railroad |
| HB | Hampton and Branchville Railroad Company Incorporated |