When Charles Rambow was deciding on the subject for his masters paper in 1970, he found the topic in some old clothes has mother had cleaned out of his grandparent's closet. Rambow was shocked to learn that what he thought was a choir robe was actually his grandfather's Ku Klux Klan initiation robe. Rambow's research led him to find out more about KKK activities in the Black Hills during the 1920s. The longtime Sturgis teacher will present "The KKK in the Black Hills: 1920" later Thursday afternoon at Black Hills State University.