Thursday, September 22, 2022, 4:00 pm EDT
Harvard University
Wednesday, September 21, 2022, 10:00 pm EDT
Columbia University Center for Science and Society
Wednesday, September 21, 2022, 10:00 am EDT
Tuesday, September 20, 2022, 6:00 pm EDT
Tuesday, September 20, 2022, 2:00 pm EDT
Tuesday, September 20, 2022, 11:00 am EDT
Monday, September 19, 2022, 10:00 pm EDT
Institute for Research in African American Studies at Columbia University
Monday, September 19, 2022, 7:30 pm EDT
University of Pennsylvania
Monday, September 19, 2022, 2:30 pm EDT
Friday, September 16, 2022, 12:00 pm EDT
Philadelphia Central High School for Boys and Pennsylvania State Arsenal, 1839. This daguerreotype, created by Joseph Saxton, is the oldest known photograph taken in the United States. Image courtesy of the Historical Society of Pennsylvania.
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