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Stumpf Portrait. Johannes Stumpf im Alter von ca Jahren Radierung von Conrad Meyer aus dem Jahr nach einer Vorlage eines Gemldes von Hans Asper heute im Landesmuseum Zrich Zentralbibliothek Zrich upload by Adrian Michael PDArt Engraved portraits of men Johannes Stumpf Hans Asper Conrad Meyer Paintings in Landesmuseum Zrich Fur