Question: Who directed the American short silent film shot on May 20, 1891 in collaboration with "The Wizard of Menlo Park"?

Context paragraphs:
Agent Orange (film): Agent Orange is an American short silent film directed by Tony Scott.  The film is about a psychedelic love story taking place in a "shadowy dreamscape".  In 2004, the film was created with a hand cranked camera, noticeably altering motion.  It was produced by Amazon.com's Amazon Theater.

Dickson Greeting: Dickson Greeting is an 1891 American short silent film.  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.  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.  The film was played for viewers at the National Federation of Women's Clubs, one of the first public presentations of a motion picture.

F. McGrew Willis: F. McGrew Willis (August 18, 1891 – October 13, 1957) was an American screenwriter of the silent and early sound film eras.  Born Frank McGrew Willis on August 18, 1891, in Pleasanton, Iowa, he broke into the film industry writing film shorts in 1914 and 1915 as a freelance screenwriter.  His first feature credit came in 1915, with "The Quest", the first of three features he would pen in 1915.  Over the next fourteen years he would write the scripts or stories for 43 silent films, three of which, "The Girl in the Pullman" (1927), "Annapolis" (1928), and "A Blonde for a Night" (1928), he also produced for either De Mille Pictures and/or Pathé Exchange.  He would also produce another three films in 1928.  In 1929, and through the next 6 years of the blossoming talking picture era, he would write the screenplays or stories for another 18 films.  In the late 1930s he would work in England, where he scripted 6 films during the remainder of the decade.  His final screenwriting credit would come on 1941's "Sis Hopkins", for which he wrote the story.  Willis died on October 13, 1957, in Menlo Park, California, and was buried in Mountain View Cemetery in Oakland, California.

Men Boxing: Men Boxing is an 1891 American short silent film, produced and directed by William K. L. Dickson and William Heise for the Edison Manufacturing Company, featuring two Edison employees with boxing gloves, pretending to spar in a boxing ring.  The 12 feet of film was shot between May and June 1891 at the Edison Laboratory Photographic Building in West Orange, New Jersey, on the Edison-Dickson-Heise experimental horizontal-feed kinetograph camera and viewer, through a round aperture on 3/4 inch (19mm) wide film with a single edge row of sprocket perforations, as an experimental demonstration and was never publicly shown.  A print has been preserved in the US Library of Congress film archive as part of the Gordon Hendricks collection.

Newark Athlete: Newark Athlete is an 1891 American short silent film directed and produced by William K. L. Dickson.  The film, roughly ten seconds in length, displays a young athlete swinging Indian clubs.  It was filmed in May or June 1891, in Edison's Black Maria studio.  The film was made to be viewed using Thomas Edison's Kinetoscope.

A Corner in Wheat: A Corner in Wheat is a 1909 American short silent film which tells of a greedy tycoon who tries to corner the world market on wheat, destroying the lives of the people who can no longer afford to buy bread.  It was directed by D. W. Griffith and adapted by Griffith and Frank E. Woods from a novel and a short story by Frank Norris, titled "The Pit" and "A Deal in Wheat".

Thomas Edison: Thomas Alva Edison (February 11, 1847October 18, 1931) was an American inventor and businessman, who has been described as America's greatest inventor.  He developed many devices that greatly influenced life around the world, including the phonograph, the motion picture camera, and the long-lasting, practical electric light bulb.  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.

A Desperate Chance: A Desperate Chance is a 1913 American short silent film drama directed by Kenean Buel.  The film starred Earle Foxe and Alice Hollister in the lead roles.  The film featured the same cast and director as the preceding film that year, "A Sawmill Hazard".

The Pursuit of the Smugglers: The Pursuit of the Smugglers is a 1913 American short silent film drama.  The film was directed by J. P. McGowan and stars Earle Foxe, James Vincent, Irene Boyle, and Stuart Holmes in the lead roles.  It was produced and distributed by the Kalem Company.

Niles Essanay Silent Film Museum: The Niles Essanay Silent Film Museum is located in what is now the historic district of Niles in the city of Fremont, CA.  The museum is housed in the Edison Theater, a century old Nickelodeon movie theater, just half a block from the former site of the Niles Essanay Studios where Broncho Billy and Charlie Chaplin made films in the 1910s.  It is dedicated to preserving and showing silent films and their history.  The silent film historical work of one of the members of its staff, David Kiehn, was featured on 60 Minutes for demonstrating that a film shot in San Francisco entitled A Trip Down Market Steet was actually made a few days before the 1906 San Francisco earthquake.  Additionally, when Google made a Google Doodle for April 15, 2011, in celebration of Charlie Chaplin's 122nd birthday, they collaborated with the Niles Silent Film Museum to produce the short.

Supporting paragraphs: Dickson Greeting Thomas Edison
Answer: William K. L. Dickson