Gassner, Hubertus. “‘Das Entsetzen oder die Hoffnung’: Mark Rothko sieht Pierre Bonnard.” In Mark Rothko Retrospektive, by Hubertus Gassner et al. Kunsthalle der Hypo-Kulturstiftung, Munich, Germany, and Hamburger Kunsthalle, Hamburg, Germany, 2008: 166–178.
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.