List of U-Boat "survivors"

I'm trying to find an up-to-date list of GE U-Series locomotives that are
either in service, or stored in usable condition, in the U.S.A. and Canada.

If anybody has such a list or knows of one on the web, I'd appreciate it if
you could let me know. Otherwise I will compile one myself and will make it
available to anybody who is interested.

try this link below they have a list of preserved and active GE U Boats and so forth:
http://www.thedieselshop.us/G.html

I did look at that site, but it's a bit outdated and the rosters aren't helpful because they don't tell you which units are active and which ones have been scrapped.