David Rittenhouse had a long and varied career. He was, of course, Philadelphia’s most celebrated astronomer but he was also a clockmaker, an inventor, the treasurer of the Continental Congress, City Surveyor of Philadelphia, and founder of the US Mint. His masterful 1771 Orrery was the state of the art in teaching celestial mechanics for first half …
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Michael Carver -- Historical Interpreter/Reenactor 