Over the weekend it was an end of a 128-year era for graduates of “The Castle on the Hill”. The Castle on the Hill Association no longer resides in the building where members once roamed the halls as high schoolers. Siouxland Public Media’s Sheila Brummer shows us the legacy still living in those who attended Sioux City’s Central High. “When you were a senior you were a cheerleader? Yes, in 1960.” Debra Kunze and Joan Dodds, are two of the four Ferguson sisters, who attended Central High back in