"Wilhelm Kux, the director of the Austrian bank, , in whose person the Austro- Hungarian-Czechoslovak interests of the Niederosterreichische Escompte Gesellschaft". (Alice Teichova, An Economic Background to Munich International Business and Czechoslovakia 1918-1938)

Musical instruments collector - http://www.antoniostradivari.net/english/castelbarco-1720.html

Music manuscripts collector ("Mr. Wilhelm Kux, a Viennese banker and collector of music manuscripts who fled to Chur, Switzerland, with the coming of Hitler"). http://mozartsocietyofamerica.org/publications/newsletter/archive/MSA-AUG-05.pdf

Patron of the arts (musicians' sponsor) - http://www.ecampus.com/bk_detail13.asp?isbn=9780300096842

Honorary Member in the Gesellschaft der Musikfreunde in Wien http://de.wikipedia.org/wiki/Gesellschaft_der_Musikfreunde_in_Wien

http://www.schenkerdocumentsonline.org/profiles/person/entity-000498.html