On what date did Woodville Latham and his sons conduct their documented public demonstration of a projector showing moving pictures in the US?

Answer

April 21, 1895

The Lathams' demonstration, which occurred at the Elias Howe Machine Shop in New York, took place on April 21, 1895, marking an early technical proof of concept for projection.

On what date did Woodville Latham and his sons conduct their documented public demonstration of a projector showing moving pictures in the US?
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