In the spring of 1986 I had the chance to visit the famous Schlumpf Collection in Mulhouse, France. Today it is know as the Cité de I'Automobile, Musée national de l'automobile, Collection Schlumpf, www.citedelautomobile.com/en/home.
However is '86 it was owned by the National Automobile Museum Association who didn't have the resources or will to run it well. At that time none of the restaurants had been opened, they only turned on the famous replica Paris street lights for 5 minutes every hour and there was one man looking after the collection in the hall. He told me dust was a huge problem as they hadn't washed the white stones on the floor before it was installed, hence everything was covered in a fine white dust, he only had the time to clean the Bugatti Royals.
With the lack of light photography was a challenge, you either had to wait for the lights to come on or hope the sun would shine through the sky light roof. I shot a combination of Kodak Kodachrome & Ektachrome slide film on my Minolta XD-7 35mm SLR.
Wikipedia has a reasonable telling of the story behind the Schlumpf brothers. If you can find a copy of 'The Schlumpf Obsession' by Denis Jenkinson & Peter Verstappen that goes into much more detail of their goings on!
The Schlumpf Collection - 1986