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.