Tuesday, March 27, 2012, 5:00 pm EDT
Chemical Heritage Foundation, Brown Bag Lecture
Saturday, March 24, 2012, 5:00 pm EDT
Academy of Natural Sciences
Saturday, March 24, 2012, 2:00 pm EDT
Academy of Natural Sciences of Drexel University
Friday, March 23, 2012, 9:00 pm EDT
Philadelphia Area Center for History of Science
Thursday, March 22, 2012, 11:00 pm EDT
Philadelphia Area Seminar on the History of Mathematics, Villanova University
Thursday, March 22, 2012, 10:00 pm EDT
Department of History & Sociology of Science, the Health & Societies Program, and the Center for Public Health Initiatives, University of Pennsylvania
Wednesday, March 21, 2012, 5:00 pm EDT
Barbara Bates Center for the Study of the History of Nursing, University of Pennsylvania
Tuesday, March 20, 2012, 5:00 pm EDT
Chemical Heritage Foundation, Brown Bag Lecture
Monday, March 19, 2012, 8:30 pm EDT
Department of History and Sociology of Science, University of Pennsylvania
Thursday, March 15, 2012, 11:30 pm EDT
Hagley Library Research Seminar Series
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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