private owner, Hannover, until 1936/37 - private owner Bad Pyrmont, 1936/37 - 1973 (bought) - private owner Dusseldorf, sine 1973 (donation) - Graphisches Kabinett, Art dealer Wolfgang Werner, Bremen, until 1979 (bought) - Sprengel Museum Hannover, since 1979 (bought).
Exhibitions: Wittmund 1981 - Hannnover 1986 - Mexico City 2003 - Sao Paulo 2007 (project) - Curitiba 2007 (project) - Rio de Janeiro 2008 (project)
