Schmied, Wieland, ed. Zeichen des Glaubens: Geist der Avantgarde: Religiöse Tendenzen in der Kunst des 20. Jahrhunderts. Schloss Charlottenburg, Grosse Orangerie, Berlin, 1980.

Mark Rothko: Works on Paper will ultimately document approximately 2,600 works from public and private collections worldwide. Cataloging is ongoing, and works and information will be added to the site during the coming years.