Who directed the American short silent film shot on May 20, 1891 in collaboration with "The Wizard of Menlo Park"?
Dickson Greeting:  Directed, produced by, and starring motion-picture pioneer William K. L. Dickson, it displays a 3-second clip of him passing a hat in front of himself, and reaching for it with his other hand. Dickson Greeting:  It was filmed on May 20, 1891 in the Photographic Building at Edison's Black Maria studio, West Orange, New Jersey, in collaboration with Thomas Edison using his kinetograph. Thomas Edison:  Dubbed "The Wizard of Menlo Park", he was one of the first inventors to apply the principles of mass production and large-scale teamwork to the process of invention, and because of that, he is often credited with the creation of the first industrial research laboratory.
i don't know