Stadtarchiv Koeln (seen on Google) 

... as was before the collapse. Two men were found dead who stayed in the neighbouring houses.

As I had a good time in Cologne for twenty years, and doing some work in the above archives, I am now agitated about the system called Kölscher Klüngel. Read my Blog in German.
www.ipernity.com/blog/fritzberlin/139043