Fernand Khnopff, Gerard Brown, Léonce Bénédite, Marion H. Spielmann, Richard Muther and John Van Dyke, 1911 Encyclopædia Britannica (1911)
“ Zettel’s landscapes are almost too markedly Swiss in colour and conception. Julius von Kollmann worked a long time in Paris and London, and acquired, in intercourse with the great foreign painters—notably Carrière and Watts—an exquisitely refined taste, an almost hyperaesthetical sense for discreetly toned-down colour and for the music of the line. In Friedrich König, M. von Schwind’s romantic vein is revived. Even the simplest scenes from nature appear under his hand as enchanted groves whispering secrets. Everything is true and, at the same time, dreamy and mysterious. ”
