1 | OPSX | Public Service Co. of Oklahoma | added 1/1979; 1/1980-7/2005 | | NAKINA |
2 | OPSX | Public Service Co. of Oklahoma | added 1/79; 1/80-7/2000 | | NRHS |
3 | OPSX | PUBLIC SERVICE COMPANY OF OKLAHOMA | | | PWRC |
4 | OPSX | Public Service of Oklahoma | | | RSRV |
5 | OPSX | PUBLIC SERVICE COMPANY OF OKLAHOMA | | | SCAC4 |