Anna-Eva Bergman (1909-1987 )Hans Hartung in his studio, 1967, period silver print. Handwritten annotations and date on the reverse. 23.8 x 18 cmBibliography : Paul Jay, Les photographies de Hans Hartung, exhibition catalogue, Châlon-sur-Saône, Musée Nicéphore Nièpce, 1980, variant . The exhibition catalogue is attached. Anna-Eva Bergman (1909-1987) Hans Hartung in his studio, 1967 , Vintage gelatin silver print . Annotations and date on verso. 23.8 x 18 cmBibliography : Paul Jay, Les photographies de Hans Hartung, exhibition catalogue, Châlon-sur-Saône, Musée Nicéphore Nièpce, 1980, variant . Included the exhibition catalogue.