| Filed On | Filing |
|---|---|
| 31 Mar 2005 | 424B5 |
| 30 Mar 2005 | 424B5 |
| 24 Mar 2005 | 424B5 |
| 18 Mar 2005 | 424B5 |
| 03 Apr 2003 | KEYSPAN CORPORATION |
| 15 Jan 2003 | KEYSPAN CORPORATION |
| 02 May 2002 | KEYSPAN CORPORATION 424B5 |
| 23 May 2001 | PROSPECTUS SUPPLEMENT |
| 16 Nov 2000 | KEYSPAN PROSPECTUS SUPPLEMENT |
| 13 Nov 2000 | KEYSPAN PRELIMINARY PROSPECTUS SUPPLEMENT |
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