EXHIBIT 99.1
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                                 April 21, 2005



Dear Aubrey and Tom:

     As each of you know I have been  considering my ongoing role as a member of
the Board of Directors of Chesapeake Energy Corporation. Since Chesapeake Energy
has grown into a much larger  enterprise,  I believe it is the best  interest of
the Company and its shareholders for all of the board members other than the two
of you to be  considered  independent  under the  current  corporate  governance
standards.  As a result I have decided not to stand for re-election to the Board
of Directors this year.

     Chesapeake  Energy is a great  company due to your efforts and the team you
have assembled at the Company. Thank you for the opportunity to be a part of the
process  during  the past 12 years.  I will  always  be proud of  having  been a
founding  member of the  Chesapeake  Board.  I wish both of you and the  company
continued success and will be glad to help in any way that I can.

                                            Very truly yours,


                                            /s/  SHANNON SELF
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                                                 Shannon Self