This week on Arizona Illustrated … Binational Encuentro, artists and activists gather on the border to perform on behalf of border crossers who identify as female; Memory Lane, Barbara Lewis shares memories of her time at the racially segregated Dunbar School in Tucson; Text, Talk, Act, a new phone-based social app seeks to guide young people through mental health challenges; Far Afield: Roman Barten-Sherman, the young Tucson bluesman performs 'I'm Throwing Up My Hands'.