Helmut Gernsheim
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Helmut Erich Robert Kuno Gernsheim was a historian of photography, a collector and a photographer.
Felix H. Man (1945) Portrait of Helmut Gernsheim
Nicéphore Niépce (1827) View from the window at Le Gras
Ernst Kitzinger
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Ernst Kitzinger FBA was a German-American historian of late antique, early medieval, and Byzantine art.
Kitzinger in 1998