Engineering: a large cogwheel, front and side elevations. Coloured drawing, 1875.
Friday, March 2, 2018, 7:00 pm EST
Princeton University (Princeton, NJ)
Thursday, March 1, 2018, 6:45 pm EST
Hagley Museum and Library (Wilmington, DE)
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Wednesday, February 28, 2018, 11:00 pm EST
Columbia University (New York, NY)
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Wolf Humanities Center, University of Pennsylvania (Philadelphia, PA)
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Princeton University (Princeton, NJ)
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Columbia University (New York, NY)
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Columbia University (New York, NY)
Monday, February 26, 2018, 5:00 pm EST
Science History Institute (Philadelphia, PA)
Thursday, February 22, 2018, 5:00 pm EST
Princeton University (Princeton, NJ)
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