New Optical Lab Brings LOC into 21st Century « Library of Congress Blog - 0 views
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In a current project, Wade is using ESEM to analyze ungilded daguerreotypes. Daguerreotypes were the first form of photography, introduced in France in 1839. Until 1841, daguerreotype plates were not gold-coated or gilded, resulting in surfaces that are uniquely fragile and difficult to study or treat. The Library holds more than 725 daguerreotypes, eight of which are ungilded. One of the eight is the first American photographic self-portrait, an 1839 image of Robert Cornelius.
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The Library commissioned a company to create four daguerreotype plates that mimic the ones created in 1839. With these model plates, Wade can use ESEM to learn how the plates are damaged and corroded and then work with conservators who develop treatment, storage and housing guidelines.
