William Kennedy Laurie Dickson (3 August 1860 – 28 September 1935) was a British inventor who devised an early motion picture camera under the employment of Thomas Edison. Early life William Kennedy Dickson was born on 3 August 1860 in Le Minihic-sur-Rance, Brittany, France. His mother was Elizabeth Kennedy-Laurie (1823?–1879) who may have been born in Virginia. His father was James Waite Dickson, a Scottish artist, astronomer and linguist. James Dickson claimed direct lineage from the painter William Hogarth, and from Judge John Waite, the man who sentenced King Charles I to death. Inventor and film innovator At age 19 in 1879, William Dickson wrote a letter to American inventor and entrepreneur Thomas Edison seeking employment. He was turned down. That same year Dickson, his mother, and two sisters moved from Britain to Virginia. In 1883 he was finally hired to work at Edison's laboratory in Menlo Park, New Jersey. In 1888, Edison conceived of a device that would do "for the Eye what the phonograph does for the Ear". In October, Edison filed a preliminary claim, known as a caveat, with the United States Patent and Trademark Office; outlining his plans for the device, subsequently named the Kinetoscope. Dickson, then the Edison company's official photographer, was assigned to turn the concept into a reality. Initial attempts were focused on recording micro-photographs on a cylinder. In late 1889, inspired by a recent encounter with Étienne-Jules Marey, Edison came up with a fourth caveat and ordered the team to change direction to work with rolls of film. William Dickson collaborated with the Eastman company to develop a practical celluloid film for this application. Initially using 19mm film, fed horizontally, shooting circular images, Dickson eventually settled on 35 mm film with a 1.33:1 picture ratio, a standard format which is still in use to this day in cinema. William Dickson and his team, at the Edison lab, simultaneously worked on the development of the Kinetoscope viewing machine. The first working prototype, using the 19mm film, was unveiled in May 1891 to a meeting of the National Federation of Women's Clubs, hosted by his wife. The 35mm camera was essentially finalised by the fall of 1892. The completed version of the 35mm Kinetoscope was unveiled at the Brooklyn Institute of Arts and Sciences on 9 May 1893. It was a peep show machine showing a continuous loop of film, lit by a small