He also sold collections to the dealerships "Otto Staudinger - Andreas Bang-Haas" and Wilhelm Schlüter from which they were sold on to several institutions including Museum für Naturkunde in Berlin and the now Slovak National Museum in Bratislava.
Wilhelm II, German Emperor | Wilhelm II | Wilhelm Reich | Gottfried Wilhelm Leibniz | Georg Wilhelm Friedrich Hegel | Wilhelm Keitel | Friedrich Wilhelm Joseph Schelling | Wilhelm Furtwängler | Karl Wilhelm Friedrich Schlegel | Wilhelm Wundt | Wilhelm Sasnal | Wilhelm Kempff | Wilhelm Busch | Wilhelm Westphal | Wilhelm von Knyphausen | Wilhelm von Bode | Wilhelm Steinitz | Wilhelm Schlenk | Wilhelm Heinrich Roscher | Wilhelm Gesenius | Wilhelm Canaris | Prince Wilhelm of Hesse-Philippsthal-Barchfeld | Friedrich Wilhelm Freiherr von Bülow | Franz Wilhelm Junghuhn | Carl Wilhelm Siemens | Wilhelm von Tegetthoff | Wilhelm von Schütz | Wilhelm von Humboldt | Wilhelm Solheim | Wilhelm Schüchter |