| 1 | CSPX | Cities Service Co., Chemicals Group | added 7/1977; eliminated 4/1978 | | NAKINA |
| 2 | CSPX | Cities Service Co., Chemicals Group | added 7/1977; eliminated 4/1978 | | NAKINA |
| 3 | CSPX | Cities Service Co., Chemicals Group | added 7/1977; eliminated 4/1978 | | NAKINA |
| 4 | CSPX | Chesapeake Specialty Products, Inc. | eliminated 1/1997; 7/2000-7/2005 (not listed) | | NAKINA |
| 5 | CSPX | Cities Service Co. | added 7/1983; eliminated 7/1984 | | NAKINA |
| 6 | CSPX | Cities Service Co., Chemicals Group | added 4/1979; 1/1980; eliminated 7/1983 | | NAKINA |
| 7 | CSPX | Cities Service Co. | added 4/1978; eliminated 4/1979 | | NAKINA |
| 8 | CSPX | Cities Service Co., Chemicals Group | added 7/1977; eliminated 4/1978 | | NAKINA |
| 9 | CSPX | Cities Service Co., Chemicals Group | added 7/77; eliminated 4/78 | | NRHS |
| 10 | CSPX | Cities Service Co., Chemicals Group | added 7/77; eliminated 4/78 | | NRHS |
| 11 | CSPX | Cities Service Co., Chemicals Group | added 7/77; eliminated 4/78 | | NRHS |
| 12 | CSPX | Cities Service Co., Chemicals Group | added 7/77; eliminated 4/78 | | NRHS |
| 13 | CSPX | Cities Service Co. | added 4/78; eliminated 4/79 | | NRHS |
| 14 | CSPX | Cities Service Co., Chemicals Group | added 4/79; 1/80 | | NRHS |
| 15 | CSPX | Cities Service Co. | eliminated 7/84 | | NRHS |
| 16 | CSPX | Chesapeake Specialty Products, Inc. | eliminated 1/97; 7/2000 | | NRHS |
| 17 | CSPX | *CITIES SERVICE COMPANY | | | PWRC |
| 18 | CSPX | +CHESAPEAKE SPECIALITY PRODUCTS | | | PWRC |
| 19 | CSPX | Chesapeake Speciality Products (Cities Service) | | | RSRV |