Ernst,
if you´re looking for the precise location of the production of WNr 14055 it´s Messerschmitt Regensburg-Prüfening in contrary to the late-war production site Mtt Regensburg-Obertraubling.
Here´s a website
http://www.regensburger-tagebuch.de/...rg-teil-1.html
and the administration building and a hangar are still standing and are used until today:
http://1.bp.blogspot.com/-OI2fM9Thi-...ot-1510285.jpg
Regards
RolandF