I've always enjoyed this so much. And I adore how you preface with a gripe at the Seuss estate's nosiness, then close with your own copyright notice. You are truly a special person.
Not a lawyer but it is my understanding from reading a history of MAD Magazine: Parody can be copyrighted and doesn't itself require permission. But you could Parody the parody if you had the talent:
All the Strangers in Strangeville liked santorum so much
But Goldy.......
All the Strangers in Strangeville liked santorum so much
But Goldy.......
Obviously I have no talent.
Thanks for this little Chanukah miracle!