"Light of the Prairie: Stained Glass in South Dakota" premiers Monday, February 4, at 8 p.m. Central on SDPB-TV. Stained glass is a unique art form found in churches, public buildings and some unexpected places throughout South Dakota. SDPB-TV producer Stephanie Rissler and Humanities Scholar and stained glass expert Barbara Johnson of Aberdeen talked about their statewide search for stained glass.