Jan 13 2006 Certificate 1/13/2006 May 23 1994 Guideline 5/23/1994 Jul 6 1993 Guideline 7/6/1993 Nov 28 1990 Guideline 11/28/1990 Sep 9 1987 Guideline 9/9/1987 Dec 31 1985 Opinion 85-9