Despite it's bad review in the Post, I saw some amazing prints.  Anders Zorn's impression was fabulous.  Félix-Hilaire Buhot's devil was great and the glove series by Max Klinger's "Ein Handschuh" was excellent. I had only seen these as slides.

The show covered erotica, darkness, symbolism, and even political content. Interesting would have been to have learned more about the collectors.

You can check out more from the exhibition here:

http://www.nga.gov/exhibitions/darkerinfo.shtm

For much of today's public the art of the late 19th century connotes impressionism, an art of the open air and the café-concert, invoking the pleasure of the landscape and the city with its many entertainments. But there is another side to the story—the discreet world of individual collecting in which prints, drawings, and small sculpture were kept aside in portfolios or stored away in cabinets. Organized around the city centers of Paris, London, and Berlin, the exhibition will include more than 100 works—mainly prints, but also drawings, illustrated books, and small sculpture—from the Gallery's extensive collections that reveal the romantic sensibilities of the arts of privacy. Here the experience of art was a private affair, like taking a book down from the shelf for quiet enjoyment. The arts of privacy encouraged the expression of darker thoughts and moody reflections—a milieu that recruited the talents of academics, realists, impressionists, and symbolists.