 Trosper is also a descendant of Yellow Hand ("Ohamagwya"), who founded the Sun Dance among the Shoshone.While serving as a university trustee, Trosper performed a cedaring ceremony at the unveiling of the "Battle of Two Hearts" sculpture of Chief Washakie in 2005, located in front of Washakie Dining Center at the University of Wyoming campus in Laramie.Sculptor Dave McGary said, "The heart and soul of the "Battle of Two Hearts" was James Trosper, who was the visionary for this monument, providing his personal leadership, working with both the University of Wyoming and the Wyoming State Legislature.