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Daguerreotype

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View Resource Daguerreotypes at Harvard

Louis Jacques Mandé Daguerre first introduced the daguerreotype in 1839 in 1839, and it was the first publicly announced photographic process. Daguerreotypes are produced by treating a silver-coated copper plate with light-sensitive chemicals, exposing it in a camera, and developing it with a mercury vapor. Harvard University has collected these unique documents for over 150 years, and this...

http://preserve.harvard.edu/daguerreotypes/