Newspaper article:
http://www.wickedlocal.com/northandover/sports/x801999443/The-legend-of-Killer-Kowalski
Another article:
http://www.wickedlocal.com/beverly/sports/x1577092742/Kowalski-s-last-fight-Surrounded-by-family-Killer-is-taken-off-life-support-this-week