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"Construction of the Pennsylvania Ave. Subway, Philadelphia" Lantern slide used to illustrate an Engineering course on Railroads delivered by Samuel Tobias Wagner from 1895-1909 at the Wagner Free Institute of Science.
Tuesday, December 6, 2022, 9:30 pm EST
Princeton University
Tuesday, December 6, 2022, 11:00 am EST
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Saturday, December 3, 2022, 5:00 pm EST
Wagner Free Institute of Science
Friday, December 2, 2022, 2:30 pm EST
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