Cleveland State University Library - web.ulib.csuohio.edu/speccoll

National Labor College - www.nlc.edu

KCSM TV - www.kcsm.org

Labour College of Canada - www.labourcollege.ca

The Center for Railroad Photography and Art – www.railroadheritage.org and www.railphoto-art.org

Rail Workers Hazardous Materials Training - www.nlc.edu/~bcantrell/index.html