Statement prepared for the International Conference on Bahá'í Libraries and Archives, January 2003 (and see another version of this statement in that document, pp. 78-79). See also an earlier report from 1999. See also bahaipedia.org/Bahai-library.com.
Documents posted between 2003-2012 had various slightly different URLs and sometimes can be found in archive.org with addresses like bahai-library.com/file.php5?file=winters_mandate.
Documents posted prior to October 2003 were at bahai-library.org [archive.org] and had completely different URLs.