Max Levenbach played an important role in the professionalization of chess in the Netherlands. From 1915 to 1927 he was the chairman of the Vereenigd Amsterdamsch Schaak Genootschap (the Amsterdam chess association). He was appointed permanent chairman of the Euwe committee for the promotion of the international character of Dutch chess. In this role, he regularly hosted foreign guests in his home. In 1926, a fund was established to enable Max Euwe to participate in international championships.
L.G. Eggink and W.A.T. Schelfhout, Partij verloren… Gedenkboek ter herinnering aan de schakers in Nederland, die tijdens de bezetting heengingen (Amsterdam 1947)
In addition, a Jokos file (number 55699) on this person is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.