https://collections.carlos.emory.edu/internal/media/dispatcher/17853/fullThomas Duncan RSAca. 1843-1847[com.gallerysystems.emuseum.core.entities.RecordXPerson@caa2]com.gallerysystems.emuseum.core.entities.RecordXPerson@caa2Salt print from calotype negativecom.gallerysystems.emuseum.core.entities.Classification@aehttps://collections.carlos.emory.edu/objects/11365/rdf