1 | OPX | Ohio Power Co. | added 10/1958; 4/1961-7/2005 | | NAKINA |
2 | OPX | The Ohio Power Co. | 1/1943-10/1957; eliminated 10/1958 | | NAKINA |
3 | OPX | The Ohio Power Co. | 1/52-10/57; eliminated 10/58 | | NRHS |
4 | OPX | Ohio Power Co. | added 10/58; 4/61-7/2000 | | NRHS |
5 | OPX | OHIO POWER CO. | | | PWRC |
6 | OPX | Ohio Power | | | RSRV |
7 | OPX | OHIO POWER CO. | | | SCAC4 |
8 | OPXP | OCEAN PACIFIC EXPRESS | | | SCAC4 |