From 17th February until 31st March, Daniel Blau’s London gallery will host an exhibition entitled, Photographer’s Own - Paper Negatives from the 1850s. “The paper negative had its heyday for a brief period in the early days of photography until c. 1860,” the organisers say. “For their beauty, zeitgeist, rarity and provenance they rank amongst the greatest treasures of photography.” The Daniel Blau gallery is located at 51 Hoxton Square, London N1 6BP and is open from Tuesday to Saturday 11 to 6pm.