The municipal museum of Moss

My mother says that in the end of the 1940's the saying went that Moss had 250 small and large industries.
It is therefore natural that the municipal museum is also a museum for Moss as an industrial town and that it is located in one of the old mill buildings.
On Sundays the museum is open for three hours so today I went there to see one special exhibition about Helly Hansen and one about Il-O-Van.
More about that later.
The photos above show the entrance to the museum. As you walk towards the entrance door, over a bridge, you see part of the river down below. Now with very little water.