The following photos are found in the Kassel city archives.

Rubble surrounding the courthouse steps and remnants of once-stately buildings along Oberekönigstraße
 

Friedrichplatz 1945
 
 

That appears to be the Martinskirche on the left
 
 
 
 

Hauptbahnhof 1945
 
 
 
 

American Troops entering Kassel along Wilhelmshöher Allee April, 1945
 
 

    Adolph Hitler on Königstraße, 1939. Three months before the invasion of Poland and the start of WWII.