Digital source Berger, Kahl: Joseph Heymann - Fritz Schaefler, 2012. Permanent URL https://www.proveana.de/en/link/lit00005252 last updated 27.12.2023 Show sources Hide sources Basic information Basic information Bibliographical reference Frank Berger, Erich Kahl: Joseph Heymann - Fritz Schaefler. 1937 - 2012, in: Wipperfürther Viertelsjahresblätter Nr. 125 (Juli - September 2012). Language of publication German Network Network Person/Corporate bodies Verweist auf Heymann, Joseph References References Research projects Project reference Acquisitions in the Graphic Art Collection of the Museum Ludwig 1933-2015