Callie Tysdal at the South Dakota Summit on Civic Education & Engagement. Photo by Wes Brown/Chiesman Center for Democracy Callie Tysdal at the South Dakota Summit on Civic Education & Engagement. Photo by Wes Brown/Chiesman Center for Democracy By Heidi Marttila-Losure September 17, 2016 Callie Tysdal at the South Dakota Summit on Civic Education & Engagement. Photo by Wes Brown/Chiesman Center for Democracy 2016-09-17 Heidi Marttila-Losure Share ! tweet