Description: The 19th century was a transformative time for the natural sciences. New discoveries didn't just happen in an armchair. Scientists adventured into unfamiliar territory by land and sea on expeditions, and their new findings fed new theories. Groups like the Columbian Institute for the Promotion of Arts and Sciences and the National Academy of Sciences formalized America's place
Description: To celebrate Volunteer Appreciation Month, we would like to recognize Marianne Green, a volunteer in the Digital Services Division who digitizes and reviews documents, letters, and photographs requested by researchers, helping provide access to our collections.
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