In Müllers Adreßbuch von 1916: Graphik-Verlag G.m.b.H Verlagsbuchhandlung, Kunstverlag, München Glückstr. 5 und Berlin NW 7, Pariser Platz 7, gegründet 22.4. 1914, Geschäftsführer: Otto Haas-Heye see Grötzinger, 1993, p. 88
Newspaper publisher of the Münchner Zeitung [de] and the Mannheimer Zeitung. He is regarded as the co-founder of German liberalism and was acquainted with Paul Lindau and Moritz von Egidy (Vater) [de], the fathers of liberalism in southern Germany.