| Joseph Nicéphore Niépce Joseph Nicéphore Niépce - From an outline in La Lumiere 1852 Book illustration Google Books LL/35206 Frontispiece to Robert Hunt Photography: A Treatise on the Chemical Changes Produced by Solar Radiation, and the Production of Pictures from Nature, By Daguerreotype, Calotype and Other Photographic Processes (New York: S.D. Humphrey, 1852)
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