Nice trip report and pictures, @dppintr2 .
Brought back many nice memories. Essen-Mülheim is where I had my checkride (private pilot - airplane) many years ago.
I can just make out my barracks in one of those pics. Our hangar at katterbach was the only original on the field. I believe they completely refurbished it now. When I was there it was falling apart. We used to have an old black and white pic of an FW-190 in front of it.
That looks like the one! One of my additional duties was facility maintenance. I was constantly calling public works people to fix stuff in the hangar. One day my CO was standing in the hangar and a big chunk of the ceiling fell down and almost hit him! It was neat to be in a hangar with so much history though.