From Newsday By JOSEPH MALLIA         joseph.mallia@newsday.com Nearly four decades after a Ronkonkoma teenager was found stabbed to death near her upstate university campus, police are once again seeking the public’s help in solving the case. Police have put Katherine Kolodziej’s picture on a billboard facing a busy two-lane highway, not far from where her half-clothed body was found in 1974. “If the person who did this is still alive, I want him to know we haven’t forgotten what he did,” Schoharie County Sheriff Anthony Desmond said last week. “It’s been 38 years, but we’re putting it out there again, continually hoping a lucky break will come … Continue reading Three Billboards, One for Each Decade