08/27/2026
Speaker Highlight: 2026 Daguerreian Society Symposium
This year’s events, to be held in Washington, D.C., from October 15–17, feature compelling speakers bringing fresh research, new discoveries, and unexpected perspectives to the images, people, processes, and stories that continue to shape our understanding of 19th-century photography.
Meet one of our speakers:
**A Closer Look at Plate Stock: Steps to Solidify a Timeline of Early American Daguerreotypy Through Examination of the Earliest Practitioner’s Working Methods, Materiality Choices, and the Availability of Proper Daguerreotype Plates**
By Rachel Wetzel
How were America’s earliest daguerreotypes made when French plate stock was unavailable? A collaborative study by the Library of Congress and Smithsonian Institution analyzed about 50 daguerreotypes made between 1839 and 1843 to find answers.
Scientific analysis of plate composition, metal layers, inclusions, and hallmarks reveals details about the materials and working methods of Robert Cornelius, John William Draper, Henry Fitz Jr., Samuel Morse, and other pioneers. The findings offer new insights into early American plate manufacturing and the formative years of American photography.
**Rachel Wetzel** is a Senior Photograph Conservator at the Library of Congress specializing in early American photography. For the past decade, she has led collaborative studies of Robert Cornelius, Henry Fitz Jr., and other early daguerreotypists. Her work encompasses technical art history, conservation, preservation, connoisseurship, and digital humanities.
From historic discoveries to contemporary practice, the 2026 Symposium celebrates the extraordinary breadth and continuing vitality of early photography.
2026 Daguerreian Society Symposium
Washington, D.C.
October 15–17, 2026
Learn more about the presenters and presentations, explore the rest of the program, register, and reserve your hotel room:
https://daguerreiansociety.org/Symposium2026