Beat Stutzer is director of the Bundner Kunstmuseum Chur (Museum of Art of the Grisons) in Chur, Switzerland, and a curator at the Segantini Museum in St. Mortiz, Switzerland. Samuel Vitali is a curator at the Museum of Fine Arts, Bern, Switzerland. Han Steenbruggen is a curator of twentieth-century art at the Groninger Museum, the Netherlands. Matthias Frehner is director of the Museum of Fine Arts in Bern, Switzerland.