Just added to the website is this informal photograph of German-American architect Ludwig Mies van der Rohe. It joins three other, more formal portraits in the digital database. See them here.

In the 1930s, Mies was the last director of the Bauhaus, a ground-breaking school of modernist art, design and architecture. After Nazism’s rise to power, with its strong opposition to modernism (leading to the closing of the Bauhaus itself), Mies emigrated to the United States. Read more (Wikipedia).