Date of birth/death1957Other namesHelfenstein JosefPlace of BirthLucerneGND121241092VIAF196423135Groups—KeywordsArt history and art criticism, Curatorial practices, SwitzerlandRelated library entries/ 3 entries LibraryPaul Klee. Catalogue raisonné: Band 1, 1883–19121998LibraryPaul Klee. Catalogue raisonné: Band 9, 19402004LibraryRobert Rauschenberg: Cardboards and Related Pieces2007