A photographic reproduction process whereby a picture is printed from a gelatin plate by using a photographic negative. The first perfected large volume mechanical copying process, it was invented in Europe in the 1870s and was promoted in New York City by Edward Bierstadt, photographer brother of Albert Bierstadt. It was named for Josef Albert (1825-1866), a Bavarian photographer, and was revolutionary in that up to 200 quality prints, indistinguishable from originals, could be made from one plate. Albert Bierstadt claimed that "1,200 per hour could be made on his brother's new steam presses." (Hendricks, 201) Sources: "The Free Dictionary"; Gordon Hendricks, "Albert Bierstadt".

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