Analysis of information sources in references of the Wikipedia article "Sonderbund westdeutscher Kunstfreunde und Künstler" in English language version.
Vincent van Gogh, who had over 100 works in the exhibition, served as the fulcrum, along with French artists Paul Cézanne, Maurice Denis and Paul Signac. In addition, then relatively unknown artists like Pablo Picasso and Wassily Kandinsky popped up. There were also Austrians (Egon Schiele and Oskar Kokoschaka), Scandinavians (Edvard Munch), Swiss (Giovanni Giacometti, Ferdinand Hodler) and Dutch (Kees van Dongen, Piet Mondrian). Germany was represented by two important art collectives, The Blue Riders and The Bridge.
Today, the Sonderbund exhibition is considered a precursor to dOCUMENTA. And not only that - many art historians regard the Cologne show as the first example of a truly modern exhibition and the beginning of a new era in art shows.