Christian Andersson (CON)/ Helen Hirsch (FRW)
(1)
Eduardo Arroyo (CON)/ Helen Hirsch (EDT)/ Fabienne Di Rocco (CON)
(1)
Helen Conroy (COM)/ Laura Hirsch (COM)
(1)
Helen Cross/ Duchowny Michael/ Tracy Glauser/ Edouard Hirsch
(1)
Helen Hirsch (EDT)/ Gecko Lingua (TRN)
(1)
Helen Hirsch and Christoph Wagner
(1)
Helen Hirsch,Katrin Luchsinger,Thomas Röske
(1)
Helen Hirsch/ Alessandra Pace (EDT)/ Heike-catherina Mertens/ Alessandra Pace/ Guenda Bernegger
(1)
Hirsch, Helen,Thun, Kunstmuseum
(1)
Ida Applebroog (CON)/ Helen Hirsch/ Jo Applin
(1)
Kunstmuseum Thun and Helen Hirsch
(1)
;Hirsch, Helen,Sperry, Katrin
(1)