Treehouse of Horror was created on 1990-10-25.
Treehouse of Horror VII was created on 1996-10-27.
Treehouse of Horror XII was created on 2001-11-06.
Treehouse of Horror XIV was created on 2003-11-02.
Treehouse of Horror XIX was created on 2008-11-02.
Treehouse of Horror IV was created on 1993-10-28.
Treehouse of Horror IX was created on 1998-10-25.
Treehouse of Horror XVI was created on 2005-11-06.
Treehouse of Horror XXI was created on 2010-11-07.
Treehouse of Horror III was created on 1992-10-29.
Treehouse of Horror VI was created on 1995-10-29.
Treehouse of Horror XI was created on 2000-11-01.