- 109th. 2013 April 17-20; Iowa City, IA, at the Sheraton Iowa
City Hotel at the invitation of the University of Iowa.
110th. 2014 April 2-5; Waco, TX, at the Hilton Waco
and Courtyard by Marriott Hotels at the invitation of
111th. 2015 March 25-28; Boulder, CO at Millennium Harvest House at
the invitation of the University of Colorado
112th. 2016 March 16-19; Williamsburg, VA, at the Colonial
Williamsburg Resort at the invitation of the College of William and Mary.