Thomas D. Schneid, Michael Schumann
©2014
Robert F. Phalen, Robert N. Phalen
©2013
Robert H. Friis
©2012
Robert S. Burlage
Wolf Kirsten, Robert C. Karch
Wiley D. Jenkins
©2011
H. Patricia Hynes, Russell Lopez
©2009
Nancy Irwin Maxwell
Ira S. Richards
©2008
Ray M. Merrill