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American photography in the 19th century consisted primarily of Daguerreotype s, Ambrotype s, Tintype s, Stereograph s, and, to a smaller extent, Calotype s, Salt Print s, and Albumen Print s. Knowledge of how to preserve these types of early photography is essential to the branch of Library And Information Science known as Archiving because it is a gateway for historians, researchers, and ourselves to how the world looked, and gives a rich feel of what life was like in the 19th century.


HISTORY


To collect photographs is to collect the world

::— Susan Sontag, ''On Photography''

Writing, paintings, plays, and sculptures all tell stories. Most are seen as fine art. Only since the last century has photography been considered an art. Photography is something anyone can create; from pictures of friends at a bar taken on cell phones posted on Flickr , to portrait photography, to photography as art, we can document moments with the push of a button.

Photography was born in the early 19th century. The documentation of life that early photographs provide give us an unprecedented glimpse into life as it was, without the painter's brush or the words of poets and writers. Like poets, writers, and painters, the photographer's eye influences what we see. He may choose to create scenes for us to view, or he may capture the moment as it happens.


PHOTOGRAPHIC PROCESSES



Daguerreotypes


Louis Jacques Mande Daguerre (1787–1851) invented the '' Daguerreotype '' process in 1839. It is a photograph that has been mounted on a silver coated surface of a copper metal plate. The surface is then sensitized by iodine fumes, placed in the camera and exposed. This is a positive process in which the image captured on the plate is a reverse view of what the camera captured.
Welling, William, ''Collectors' Guide to Nineteenth-Century Photographs''. Collier Books, New York, 1976.


  Image:stereographjpg "Cold" class="copylinks" target="_blank">Harbor, Va, vicinity Cavalry horses outside the Old Church Hotel
  Image:catalogexamplejpg "Petersburt," class="copylinks" target="_blank">Va Detachment of 3d Indiana Cavalry