UNITIL CORPORATION 6 LIBERTY LANE WEST HAMPTON, NH 03842 VIA EDGAR TRANSMISSION Securities and Exchange Commission 450 Fifth Street, N.W. Washington, D.C. 20549 Re: Unitil Corporation File No. 070-09099 Ladies and Gentlemen: We understand that, through an error in our transmission of a Form U-9C-3, Quarterly Report Pursuant to Rule 58, that filing was treated as a new filing and assigned File No. 070-09099. We request that the Commission withdraw the filing in File No. 070-09099. We have retransmitted the Form U-9C-3, properly marked,in File No. 074-00021. Please call me at 603-773-6501 with any questions. Very truly yours, Daniel V. Main