6/12/2011 Shenandoah

4/11/2004 Ralls, Ph.D., FSA Scot.

4/5/2009 Ralls, Ph.D., FSA Scot.

2/21/2000 Ralls, Ph.D., FSA Scot.

9/17/2000 Ralls, Ph.D., FSA Scot.

9/18/2000 Ralls, Ph.D., FSA Scot.

9/13/1992 Childress

1/12/1999 Childress

7/30/2006 Childress

3/26/1989 Childress