Bloch, Dr Vitalo. The Hague, Sweelinkstraat 61. Art historian of Polish or Russian Jewish origin, who acted as purchasing agent and adviser to Muehlmann, Goepel and others for protection against the anti-Semitic laws. Intimate friend of Friedlander. Close contact of Hofer and Lohse. After Friedlander, most improtant figure in Dutch collaborationist art circles.