19 May 1997 May 18, 2014 Author: Staff The Sierra Gorda biosphere is established. Famous Words of Inspiration..."If a person with multiple personalities threatens suicide, is that considered a hostage situation?" Steven Wright — Click here for more from Steven Wright Related posts: 18 January 2002 6 September 1997 11 May 1997 31 August 1997 24 December 1997 31 August 1997 27 November 1997 15 December 1997 16 December 1997 Categories: History Tags: 19 May, 1997