I know nothing about dollhouses.

My girlfriend, however, has some
interest in them. She also loves art
nouveau. Does anyone know where I
can find something for a dollhouse in
the Art Nouveau tradition? Can you
point me to a website? Does someone
have something they'd like to sell?

Art Nouveau is an art period, roughly between 1895 & 1914. It crosses
over the Victorian era (1837-1900) and the Edwardian era (1901-1919).

Therefore, you should look for a house from one of those eras. I don't
think you'll find one listed as Art Nouveau. Once you've found the
house, you can look for art objects & furnishings from the Art Nouveau
period.

I would suggest going to Google and researching Art Nouveau so you'll
know what to look for. Ebay is a good source. In their Basic Search,
type in Dollhouse Art Nouveau. Even if you don't buy anything there,
you can see what is available and check out your local dollhouse store.

HTH
Carol