 He is on the Awards Committee of the Chief Washakie Memorial Endowment at the University of Wyoming Foundation.Trosper, as Chair and Executive Director of the Chief Washakie Foundation, helped lead the creation of this endowment, which was valued at $545,000 in 2018 and as of 2016 had supported 167 students with nearly $249,000 in scholarships.The Chief Washakie Foundation supports educational programs and research into the history and cultural traditions of the Shoshone and Arapaho of Central Wyoming and advocates for Native American education.