Daguerreotype- an obsolete photographic process, invented in 1839, in which a picture made on a silver surface sensitized with iodine was developed by exposure to mercury vapor.
Cyanotype- a process of photographic printing, used chiefly in copying architectural and mechanical drawings,that produces a blue line on a white background.
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| Daguerreotype |
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| Original Photo |
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| Cyanotype |
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| Original photo |