www.nre.com
www.facebook.com/NRELocomotive/
www.linkedin.com/company/national-railway-equipment
www.pinterest.com/pin/367606388331055238/
www.railwayage.com/tag/nre
www.trainweb.org/gensets/nre.html
www.apnews.com/article/98c1995a011d7d9c17dc4655283e811c
https://en.wikipedia.org/wiki/National_Railway_Equipment_Company