http://www.trinityforge.com/
this is a good informational site on trinity =).
http://www.trin.net/aboutus/default.html
this site will tell you a lot of info on trinity.
http://www.highwayguardrail.com/
this site will show you things trinity makes.
https://www.trinitylpg.com/
this site has info on trinity.
http://www.trinityrail.com/
this site has info about trinity.
https://www.trinityheads.com:/
this site will teach you some about trinity.
http://finance.yahoo.com/q?s=trn
stocks about trinity.